Rule 34 Dev - 1boy 5girls absurdres blush breasts eye_focus go-toubun_no_hanayome greyscale highres large_breasts monochrome multiple_girls nakano_ichika nakano_itsuki nakano_miku nakano_nino nakano_yotsuba shoulder-to-shoulder siblings sisters sitting sound_effects speech_bubble sweat train_interior uesugi_fuutarou yongo_(ssaa9675)|19102539105