Rule 34 Dev - 1boy alternate_form black_background chaldea_logo chaldea_uniform curled_horns dark_young_(fate) demon_boy demon_horns demon_wings fate/grand_order fate_(series) fujimaru_ritsuka_(male) greyscale hair_between_eyes horns looking_at_viewer male_focus monochrome parted_lips ringed_eyes solo upper_body urup_zzz wings|21173107995