Kuroto_Tennouji
Pls don't be overly cliche most authors will have their story in kuoh town and directly flowing canon by joining the main cast or replacing issei , have your own adventure don't try and copy another adventure u could could join Kyoto or khaos brigade or be on your own , pls this is shaping up to different, don't make another copy and paste , most authors don't have the balls to be different don't be one of them
Responding to you again, it's likely that Kuroto will be closely connected to Kuoh, because of his family, but his story is not the same as the demons', so we cannot confuse humans with demons. Kuroto is a human, so do not confuse demonic conflicts with the conflicts of a Jujutsu Arcanist. Kuroto will have his duties and responsibilities which are not tied to Kuoh, or to the family of Rias Gremory, although his fate is somewhat intertwined with the Gremorys in a certain way.
One more thing is doesn't take genius to figure out u gave the mc the six eyes , the main use of six eyes wasn't just ce efficiency also help with math involved in the technique, if want to give mc a cursed technique make it some what rooted in maths , kinetic or potential energy, vectors or physics in general if u don't know any abilities go superpower wiki and type mathematics manipulation, vector manipulation, potential and kinetic energy manipulation or physics manipulation and if u scroll down u will see alist of abilities that can come from them with there own explanation and applications and users in ficition and how they use it
Also pls make the harem more unique , every body keeps on doing rias and akeno so much it's disgusting when there a literally so many single women in dxd or they would do the disgusting genre of NTR For your harem if u were to listen to me this is my line up from most important to least important Runeas , Nyx , tiamat, serafall , yasaka,kuroka Lavina, Ophis (but this one is not a must most ppl don't like Lollies ) pls don't forsake me