DC Batman's Younger Brother!

Well I've got a few things going now and well I'm just gonna keep moving between all of them doing post whenever mainly because it's just a weird habit I've got now and I wouldn't expect me continuing some of these for a duration or stuff like that, but I definitely probably will! Anyways this story will mainly be about a certain character I'm gonna make that wi be the younger brother of Bruce Wayne...EXCEPT he is a reincarnated Weeb with a System! But their will be a catch once I get this stuff started also his will include a harem of sorts? Mainly because I like a few of the females of the DC world and I think imma place the list down below, so spoiler ahead. Harem List: Wonder Woman(Diana) Starfire Kara(Super Girl/Power girl a mix between the two) Pamela Ivy(Poison Ivy) Barbra Gordon(Batgirl/Woman) Raven(Rachel) Catwoman(Selina...I'm having difficulty with this one mainly because I definitely ship her with batman...but it's something y'all can help me decide plus I don't want this too big?-)