Help me find this Dadzawa fic

Hello all, there was this dadzawa fic I read awhile back and I cannot for the life of me find it. Deku is a vigilante and him and aizawa pass notes back and forth under a bench to keep in communication. Aizawa keeps all the notes and one day he thinks izuku dies and is super sad about it. Deku joins 1-A and eventually aizawa finds out he's the vigilante. I can't remember all the details but know that's the basics. Pretty sure deku is also suicidal