1boy, 1girl, bikini, blank_stare, brown_eyes, brown_hair, closed_mouth, expressionless, eyebrows_hidden_by_hair, holding_another's_wrist, kagawa_rin, looking_at_another, muscular, navel, short_hair, side-tie_bikini_bottom, soredemo_ayumu_wa_yosetekuru, staring, swimsuit, tanaka_ayumu, thick_eyebrows, yamamoto_souichirou