Strongest Red dragon emperor

Liam was a normal high school student in his last year, at least until he died and his soul fused with the certain tit loving protagonist. Not having enough strength to gain dominance, both of their souls collapsed and gave birth to a new individuality. What would it be like if Issei wasn't just a pervert? What would it be like if Issei actually loved training? Is he still Lustful? Hell yeah, but not for tits, it is for power and dominance! Not to mention, it seems that Boosted gear isn't the only thing that he inherited from his predecessors... -------- This fanfic also contains elements from demon Slayer and Black clover. But it won't affect or change the plot of DXD in the slightest. Neither will it change the world setting.... [Note: This is only a side project of mine, so it will have very bad update stability. This story can have grammatical errors as well as spelling errors.] The copyrights for Highschool Dxd belong to it's respective author, I do not claim anything. The cover is not mine, if the owner wants me to take it down I will gladly do so...