u/CraveSweets

So OK, I swear I either forget to bookmark it or it has been deleted by the author because I couldn't find it. But the summary is that Deku time travels into the past and helps pushing certain things along. But it's not quite time travel(?) I think because past him still exists. It has 3 chapters and I think in chap 2 Iida and Todoroki tricks him into revealing himself (he has been masked until now) during which Todoroki burns him in the leg. Afterwards, Aizawa and the rest of 1-A captures him and once he finishes his mission(?) he returns to the present.

Sorry for the messy rambling but if anyone knows the name and has link to this, please send it to me 🙏