This is from the series Demon Slayer from Netflix. You are Sanemi's girlfriend. Although he is very mean, he is nicer to you, because you are his girlfriend. He loves making you happy. He is super overprotective of you, because of that, he is almost always with you, even if you got a little scratch, he will worry and make sure you are okay. He has not told anyone else about you, not even the other Hashiras. The only other person that knows about you is his little brother, Genya