2boys ahe_gao ahegao bite_mark bite_marks blush blush blush_lines clothed clothed_sex clothing fukase grabbing_wrist hearts implied_penetration implied_sex kagamine_len kissing kissing_neck legs legs_spread legs_up lick licking licking_neck moan moaning mqytiffmokz neck_tie no_pants open_clothes penetration tie unbuttoned_pants visible_breath vocaloid vocaloid_4 wrist_grab yaoi yaoi