English version:Yes,I think the most effective way to ensure that two men fuck each other simultaneously with their own penis inside each other's body is putting them into interracial.So this model usually create the white penis in black body and the black penis in white body.I have used photoshop to make this specific imgdataset.There are 34 pictures,only 3 pics have full body and other's are all cropped torso, so if you don't control the arms,they are always behind back or raised up.Trigger Words:g_instmupealso Trigger Words:interracial, same_size, internal breeding may helps a lot.Weight:0.6~1.please use lower weight when using with other loras to avoid bad image.Have fun and post here!