1girl ahoge angry blonde_hair blue_eyes finger_pointing hair_ornament headband heat_sink mitsuyuki_yuzuna original personification pointing school_uniform serafuku solo sunoko-tan thigh-highs twintails wankoro  armpits arms_up blonde_hair blue_eyes hair_intakes hair_ornament heat_sink jumping katahira_masashi long_hair open_mouth original panties pantyshot personification shoes short_dress smile striped striped_panties sunoko-tan thighhighs twintails underwear upskirt very_long_hair 2girls arumi-san bangs hair_ornament hand_holding heat_sink holding_hands long_hair monochrome multiple_girls original personification school_uniform serafuku siblings sisters skirt sunoko-tan tano