some_writer
As an author, you shouldn't take people that can't give constructive criticism to you seriously. Your writing isn't perfect. It feels rushed at times. That doesn't really matter though, because it's still an enjoyable read. I can understand a desire from praise from the readers, but I hope you are writing this for yourself more than an audience reaction. Tell *your* story, don't let internet trolls beat it down for not following their dreams. If they want it so bad, they can write their own story.
People will never be satisfied. It's either them being dissatisfied for it being a power fantasy, the character is not good enough, the character did not hook a certain girl or get a certain item, they aren't using their powers like they "should," etc etc etc. People will never be satisfied because they either want no character development, want things to be different, or just want to troll. Those guys have nothing helpful to say, either with constructive criticism or reminders about certain events or characters that are appearing in the Canon series. I like this Issei; he's not the coward from Canon and actively seeks to improve himself and others around him. He's like a real Protagonist now, instead of the comic relief that has OP BS stapled onto him.
I like this story *cap*. I would've liked the orignal issei too if he hadn't been embarassing and a puusy. Like dude you have all those girls wanting your D but your a coward and never go for it. Well this story is giving me the same vibes but let's not assume ahead maybe this issei would give them what they want instead of being someone with no balls.