特別企画｜Y2K Style Ver - Ruizuki&Collab OC Rurika

Collab OC Kamishiro Rurika with @Didieri (https://pixai.art/@didieri) Kamishiro Ruizuki is Didieri OC (https://pixai.art/@didieri) 💜💗💜💗💜 Story 💗💜💗💜💗 The Sibling Stage of Violet Heartlight When the purple-pink lights slowly descended from above the stage, the entire venue seemed to be illuminated by both nightfall and blooming flowers at once. In the audience, soft violet and pink glow sticks swayed layer upon layer, like a sea of flowers blooming in the darkness. On the giant LED screen, crystal hearts and violet flower patterns appeared, while tiny fragments of light flickered along with the prelude, as if waiting for a certain voice to awaken them. At the center of the stage, Kamishiro Rurika stood on the left side. She was much shorter than her brother beside her, and under the spotlight, that obvious height difference made her look even lighter and sweeter. Her long, wavy deep-violet twin ponytails flowed down to her waist, swaying gently with her faint breaths. Her pink eyes reflected the stage lights, as if they held an entire dreamy sky of stars. Her pink-purple idol outfit glowed softly beneath the lights. The satin top, pearl embroidery, layered ruffled skirt, and crystal heart pendant at her chest made her look like a violet flower spirit who had stepped out of a fairy-tale stage. Kamishiro Ruizuki, standing on her right, carried a completely different aura. He was tall, quiet, and slender. His cool-toned purple mid-length hair fell behind his shoulders, and the clearly separated pink highlights in his hair looked especially distinct beneath the lights. They were not a soft gradient, but defined strands of color, like carefully arranged lighting in a stage play. His golden eyes looked steadily ahead. His expression was not flashy, yet he carried a reassuring presence. His stage outfit combined deep purple and cool pink. The lightweight fabric shifted gently with his movements, and the asymmetrical cuts gave him a theatrical elegance while still preserving a mature and handsome masculine silhouette. Silver chains swayed lightly at his waist and wrists, catching the light in cold, delicate flashes. One was like a pink-violet crystal flower. The other was like a stage light guarding the night. The prelude began. Ruizuki raised his microphone first, and his low, steady singing voice flowed from his lips. His voice was calm and unhurried, like a dark piano melody spreading steadily through the opening of the song. The spotlight fell on him, making his golden eyes shine even brighter. He did not make any excessive movements. He only turned slightly to the side, leaving the brightest place at the center of the stage for his younger sister. When Rurika heard her brother’s voice, the hand gripping her microphone slowly relaxed. She knew Ruizuki had always been like this. He would not steal the stage from her, nor would he push her somewhere she could not handle. He simply stood where she could feel his presence, telling her in the most stable way— You can sing. In the next second, Rurika lifted her head. When her voice joined the melody, the entire stage seemed to be gently lit up. Her clear, high, and soft singing voice crossed the venue like violet crystal struck by starlight. The crystal heart on the LED screen flickered with her first lyric, and rings of pink-violet light spread outward from her feet, like petals blooming across the stage. A wave of delighted cheers rose from the audience. Rurika did not shrink back. She took one step forward, her skirt lifting softly with the motion. The pearl chains and little bows at her waist shimmered with tiny glints of light. She held the microphone in one hand and reached toward the audience with the other, her fingertips drawing a gentle arc through the air. It was not a deliberately showy gesture. It was simply the way she sent her song outward. Ruizuki turned his head slightly beside her, and a faint smile flashed through his golden eyes. He could hear it. Today’s Rurika was steadier than she had been during rehearsal. Just before the chorus, the rhythm suddenly quickened, and the drumbeat struck the stage like a heartbeat. The purple-pink lights grew brighter, and their shadows crossed on the stage floor. According to the original choreography, Ruizuki was supposed to step forward here and take over the more powerful section. But this time, Rurika did not immediately move backward. She turned to look at her brother, her pink eyes carrying a bright hint of challenge. Ruizuki understood her intention with just one glance. Without hesitation, he stepped forward and stood beside her. The two of them stood side by side at the very front of the stage. Their height difference became especially clear in that moment. Standing beside her brother, Rurika looked petite but not fragile. Ruizuki was much taller than her, yet he did not overpower her light. The stage lights poured down from above, casting their tall-and-short silhouettes into a beautiful outline. The chorus burst open. Rurika’s high notes rose straight upward like pink-violet starlight, while Ruizuki’s harmony became a deep violet base, firmly supporting her melody. When their voices overlapped, the glow sticks in the audience began waving almost in perfect unison. On the LED screen, the crystal heart blossomed into a giant violet flower, each petal unfolding to the beat. Rurika turned and stepped lightly around her brother’s side. Her twin ponytails traced soft arcs through the air, and her skirt opened lightly like a blooming violet flower. She sang the next lyric, the end of her voice carrying a bright smile. Ruizuki matched her movement, taking a slight half-step back so she could complete her turn perfectly. But when Rurika finished spinning and almost lost her footing because of her skirt, his hand naturally lifted. He did not touch her. He simply made a protective motion beside her. Rurika steadied herself. She looked up at her brother and could not help smiling. Ruizuki only looked at her quietly, as if saying: You did well. The second verse entered a stronger rhythm. This time, Ruizuki stepped forward and raised his microphone. His singing voice carried a theatrical quality—low, clear, and powerfully controlled. Every turn of melody was like a precisely designed stage movement, calm yet captivating. His gestures were simple and sharp. His coat hem lifted with his movements, and a silver chain flashed brightly beneath the lights. Rurika stood slightly behind him and added harmony. She no longer rushed to step forward. Because she knew her brother also had his own light. It was completely different from hers. It was not dreamy or sweet, but a light that made the entire stage feel stable and made everyone unable to look away. When Ruizuki’s part ended, Rurika immediately connected with a high note. Their voices merged once again. This time, it was no longer one person supporting the other. They were truly standing side by side. During the bridge, the stage lights suddenly dimmed. Only one gentle pink-violet spotlight remained on Rurika, while another deep violet spotlight fell on Ruizuki. The music in the background left only piano and a faint electronic beat. Rurika lightly held the crystal heart pendant at her chest. She sang the quietest lyric. Her voice was soft, yet it reached every corner clearly. Like a violet blooming at night, it was not loud, but impossible to ignore. Ruizuki’s harmony slowly joined from behind her. His voice surrounded hers in a low, gentle layer. It did not feel like restraint. It was more like a sky held open for her, where she could sing without fear. Rurika’s eyes shimmered faintly. She suddenly remembered many years ago, when she had first stood on a small stage, and her brother had also stood diagonally behind her. Back then, she was still very small. She had been afraid of the lights and afraid of singing the wrong note. Ruizuki had not taken her hand, nor had he completed the performance for her. He had simply stood there calmly and said: “Sing. I’m listening.” Now, he still stood beside her. But this time, Rurika was no longer only the younger sister being protected. She could also use her own voice to illuminate her brother’s stage. When the final chorus arrived, all the lights in the venue lit up at once. Purple, pink, and white beams crossed into a vast curtain of stars. The cheers from the audience surged like waves, and glow sticks moved neatly with the beat. Rurika and Ruizuki walked together to the very front of the stage. She reached her hand toward the audience, her smile radiant. He stood beside her, his gaze steady and gentle. They sang the final lyric together. Rurika’s voice was bright and pure. Ruizuki’s voice was low and stable. The instant their high and low tones overlapped, the crystal heart on the LED screen shattered into countless specks of light, then gathered again into a fully blooming violet flower. The music stopped. The entire venue fell silent for one second. Then applause and cheers exploded. Rurika breathed lightly, her cheeks flushed from the performance. She turned to look at Ruizuki, her eyes full of expectation. “Brother, was that okay?” Ruizuki lowered his eyes to look at her. His expression was still calm, but much softer than usual. “It was better than rehearsal.” Rurika’s eyes instantly lit up. “Really?” “Mm.” Ruizuki nodded slightly. “Especially the position change you made before the chorus.” Rurika had wanted to pretend to be composed, but after hearing that, she could no longer hold back her smile. “Because I wanted to stand at the very front together with you.” Ruizuki looked at her in silence for a moment. Then he said quietly: “Then next time, let’s stand there together again.” Rurika froze for a second. In the next moment, her smile became brighter than the stage lights. During the curtain call, she held her skirt lightly and bowed deeply to the audience, her twin ponytails falling forward with the movement. Ruizuki stood beside her and bowed as well. The silhouettes of the siblings, one tall and one short, were especially clear beneath the purple-pink lights. From the audience, people shouted their names. Rurika raised her hand and waved energetically toward the crowd. Ruizuki stood quietly beside her as always, in a position where he could see the entire stage. But this time, his gaze was not only protective. It was also proud. Because tonight, Rurika was no longer just the little sister standing beside her brother. She was an idol who could light up the entire stage with her voice. And Ruizuki was no longer only the older brother protecting the stage for her. He was her partner in creating this purple sea of light. The lights slowly dimmed. On the LED screen, violet petals fell one by one, finally turning into a softly glowing crystal heart. That heart flashed once in the darkness. Like the heartbeat the siblings had left behind together. And like a promise that would not fade before the next stage began. 💜💗💜💗💜 OC information 💗💜💗💜💗 Character Profile｜Kamishiro Ruizuki Setting: ABO Universe Basic Information • Name: Kamishiro Ruizuki • Gender: Male • Age: 17 • School：Kamiyama High School Grade 2 / Second Year • Role Archetype: Stage-oriented character / mature, handsome type • Skills: Piano performance , Drama acting • Girlfriend：Kamui Galuri •Young Sister：Kamishiro Rurika ⸻ Family Background Ruizuki grew up in a family deeply connected to the stage. In such an environment, performance, costume design, and stage emotion were part of everyday life. • Father: Kamishiro Rui • Mother: Akiyama Mizuki Within the ABO worldview, the family does not emphasize rigid roles or hierarchies. Instead, it places greater value on mutual understanding, personal boundaries, and respect. From his father, Ruizuki learned how to maintain control and stability on stage. From his mother, he inherited a keen sensitivity to emotional flow and self-expression. This upbringing shaped the way he interacts with others— naturally projecting calmness, confidence, and a protector-like presence. ⸻ Appearance Eyes • Gold • Steady, focused gaze Hair • Cool-toned purple, straight mid-length hair, reaching the back • Clearly separated pink highlights • The pink is in distinct strands, not a gradient Overall Silhouette • Mature young male proportions • Composed expressions, never showy ⸻ Clothing Style (Influenced by His Mother) • Stage-inspired × personal expression • Androgynous design with a masculine balance • Lightweight fabrics, asymmetrical cuts • Low-saturation color palette dominated by deep purple and cool pink ⸻ Aura & Personality Impression • Calm and reserved • Highly sensitive to emotional shifts in others • Naturally positions himself where he can see and protect the whole picture • His presence is defined by stability and trust 💜💗💜💗💜 OC information 💗💜💗💜💗 Collab OC Kamishiro Rurika with @Didieri (https://pixai.art/@didieri) Daughter of Kamishiro Rui and Akiyama Mizuki Name: Kamishiro Rurika（神代 るりか / 神代 瑠莉花） Brother：Kamishiro Ruizuki (Age:20) Age: 16 Birthday: 6/30 Personality: Dreamy, gentle, and pure-hearted. She carries a soft lively energy and natural stage confidence. Rurika is emotionally sensitive and caring toward her family, but she also hides a subtle competitive spirit when performing on stage. Appearance: Rurika has long, wavy, deep violet twin ponytails that flow down to her waist, maintaining a rich saturated purple tone under stage lighting. Her eyes are bright pink, sparkling with innocent idol-like charm. She has fair, smooth skin and gives off a dreamy elegant aura. Her idol costume follows a pastel luxury fantasy style, featuring satin bodice design, pearl and crystal embroidery, layered ruffled skirt, flower crown decoration, and a crystal heart pendant at the chest center. Overall, she embodies a magical dream idol girl aesthetic. Skills: Singing with clear high-pitched vocal quality Harmony arrangement Dance performance and choreography Stage presence control Basic piano playing Lyric writing Ribbon dance performance Special Trait: When singing emotional ballads, her voice becomes especially radiant, and stage lighting often appears naturally synchronized with her aura. Fan Color: Soft violet-pink gradient Symbol: Crystal heart and violet flower