火渡カイ x Reader (I actually read a whole WikiHow article on Kai. You'd better read this.) (Y/n) and other humans are polar opposites. She overthinks about how much she overthinks and anxiety is her best friend. She draws smiles in the back pages of her notebooks just for the sake of seeing one. Her best friend is her own reflection. Yeah, that's the degree of isolation she has to cope with. Kai Hiwatari, an impenetrable yet beguiling adolescent, has issues. Confused about literally everything (more precisely, life) and at the verge of abandoning hope, he has found solace in writing haikus. Fate has something in store for both of them. Is it love, joy or even more pain and problems? KAI HIWATARI (TSUNDERE) X READER