Deku has the powers of Ultraman Taro and uses them to help Team Flash and has known Barry and Iris his whole life. (Izuku x Multi. Story available on Wattpad as well under my profile @marvellover356. This is part of a bigger Tokusatsu universe of Arrowverse stories).

When a boy is struck by lightning...hundreds of times over...wakes up from a 9 Month coma, he wakes up with strange powers. Now he can run faster than All Might himself, but...it seems he always RUNS into danger. His name is Izuku Midoriya, and he is...! Speedster!Izuku

Yui Kodai was shy, anxious even. She struggled to interact with people over the simplest things so when she developed a crush on her next door neighbour, Izuku Midoriya, she felt she was screwed. For years it went on, never being addressed and then... things changed. When that fateful bolt of lightning struck Izuku, he became something else. When he did, Yui couldn't keep hiding.