Bro... this just screams incest and im not liking it at all...

Uhhh no? They just are very close to call each other 'brothers', they aren't blood related and NO this isn't one of those 'step-bro' situations.

Ehh they were kinda raised as brothers so I dont like it

That doesn't make them brothers still tho. You're brothers if you're blood related or simply via paper.

It's more like two friends who grow up together, are as close as "brothers", but at the end of the day they still aren't actually brothers.