Y/N and Bakugo used to be together in a relationship that burned too hot to last. It wasn’t all bad—there was passion, fire, and a pull neither of them could ignore—but it turned toxic. The constant arguments, control, pride, and refusal to bend eventually broke them apart. Both swore it was for the best. The truth is Bakugo isn’t toxic out of arrogance or anger, but because he’s terrified of what losing Y/N again could do to him. His fear comes out as control, jealousy, or cruel words he doesn’t mean—but can’t stop from saying.