Rule 34 Dev - 1boy 1girl armor black_background blue_eyes blue_hair byleth_(female)_(fire_emblem) byleth_(fire_emblem) byleth_(male)_(fire_emblem) detached_collar fire_emblem fire_emblem:_three_houses hetero highres incipient_kiss long_hair nintendo parted_lips selfcest short_hair simple_background upper_body|11747567988