Isn’t there another manga like this with a very similar plot?

Oko-sama box/star? The guy was playing a sentai character?

Not the one I was thinking of in this one I think the guy is blond a delinquent who isn’t really one. Then this popular guy with black haired discovers that this class mate works as a power ranger when he goes to this event with his little brother or something like that.

Okay yes never mind it was that, thank you