Hmm i didnt read any of them, but you can try this one.
http://www.mangago.zone/read-manga/uragiri_wa_boku_no_namae_wo_shitteiru/
I've read its similar to Silver Diamond. :D
I haven't read Silver Diamond, so I'm not sure what you're looking for. I think these may have sth in common with Super Lovers:
http://www.mangago.zone/read-manga/brother_x_brother/
http://www.mangago.zone/read-manga/brothers_yamamoto_kotetsuko/
http://www.mangago.zone/read-manga/toshishita_no_ryuugi/
Well, the only similarities are that they're about brothers and the developement is kinda slow ;_; So Idk if that's what you meant
This one is the closest I can think of at the moment http://www.mangago.zone/read-manga/komatta_toki_ni_wa_hoshi_ni_kike/
And if you don't mind shoujo http://www.mangago.zone/read-manga/akatsuki_no_yona/
Best i can come up with right now :)
I'm sorry I've already this T-T
I'm sorry I've read all three multiple times T-T
Both of those are in my top favorite mangas already T-T
That's too bad, sorry I wasn't of much help ;_;
Can someone or multiple people help me? I'm trying to look for mangas similar to silver diamond or super lovers(๑•ㅂ•)و✧ I've read all the mangas with the same authors as well. Please help me. Suggest a lot because the more the merrier. Please and thank you ლ(´ڡ`ლ)