Oboro's birthday!

[SPOILERS] (DON'T READ IF YOU DON'T WANT HALF OF SEASON 5 SPOILED FOR YOU OK? OK LET'S START-) Oboro Shirakumo is Aizawa and Present Mic's best friend when they were in UA. (Yes Aizawa and Mic went to UA together) And they all ended up having a little trio called the ✨Three Dumbigos✨ by their classmates. Aizawa and Oboro did their work study at the same agency, while Mic did his close by, and there was a villain attack, Mic had used his quirk on the villain, but the villain could absorb quirks. So the villain used Mic's quirk against Aizawa and Oboro, causing the building to collapse on them.

Aizawa survived, but Oboro didn't. And they were only 17 when it happened.