2boys, arm_tattoo, black_background, blue_lock, boy_on_top, chimmyming, chromatic_aberration, greyscale, holding_another's_wrist, isagi_yoichi, layered_sleeves, long_sleeves, looking_at_another, lying, male_focus, michael_kaiser, monochrome, multiple_boys, on_back, open_mouth, short_hair, short_over_long_sleeves, short_sleeves, shorts, simple_background, soccer_uniform, sportswear, strangling, tattoo, yaoi