if we ignore the girl limitation for bit, I'd love to date Yusuke, and i might date Ryuji as well. He's hot and all, and i really like him, but real talk? His quick temper might cause quarrel between us, and i'm not totally sure how i'd take his boisterous demeanor if i knew him irl... while Yusuke? I think him and I would get along great.
If I were straight? I'd absolutely love to be with Haru, she is... just wonderful honestly. I'd beat her ugly fiancee's ass (if she was okay with that) and make her happy like she deserves. I'd also honestly date Ann, she's a nice gal, i find her concern for shiho and her desire to get stronger very admirable and sweet. Hifumi's another great choice, I'd enjoy having her teach me play shogi even tho i'm sure i'd always lose, and maybe see if i could introduce her to games like Fire Emblem~