Mha Feral Person

So you know those trope where if someone's left in the forest or stranded island for too long, they go feral and start acting like a animal/caveman? Yep imndoong that with Aizawa, so basically Aizawa been stranded on a island, the others hero tried to find him but couldn't even Hawks couldn't, so they give up but after 25 years long, The Mha class found a island which looks like a paradise but when they enter they heard noises they follow it and they find Aizawa who looks feral with longer hair and a beard and ripped clothes actigg like a animal aka caveman, also Aizawa is you lol.