flat color, clean geometric lines

flat color, clean geometric lines, simplified, little texture, soft pastel palettes. In a dynamic, low-angle shot inside a cozy bedroom, two teenage girls joyfully celebrate a birthday together: sylphana on the left and dairi-chan on the right. Sylphana is slender with long lavender hair, cross-shaped bangs, teal eyes, and upturned eyes; she wears a pastel pink sweater and skirt, grinning widely while holding a colorful cake with "2026年5月6日" in precise geometric lettering, her hands gripping the plate enthusiastically. Dairi-chan has a pixie cut with short black hair and short bangs, brown eyes, and a slender build with medium breasts; dressed in a loose white t-shirt and shorts, she laughs with mouth open, her hands clapping excitedly near her chest. Balloons, streamers, and wrapped gifts scatter the wooden floor and shelves. Soft, even pastel lighting creates a whimsical, comic atmosphere with clean outlines and minimal shading.