This was literally 6 months ago and I'm sorry for being so late but Akijin.

I assume you're asking me who do I think is the "dominant" one in the relationship and NOT which name I think is more aesthetically pleasing so I'll elaborate on that, too.

Personally I don't think Jin is one for the chase. The last time Jin tried to pursue someone romantically it ended in tragedy and I think that Jin is traumatized from that first love to not really go out of her way to attempt again. I feel like she would deeply fear losing Akiomi while trying to date her and that would scare her out of even trying ... Jin has pretty low willpower yeah.

Akiomi on the other hand has always been shown to fiercely chase after what she wants, both in her past and in her current career. If she wants to pursue Jin romantically I feel like she would have less inhibitions to going after her but I also feel like it would take a while because she's crazy like that and requires the slowest burn to ever burn.