I tried to explain the best I could. It will be up to you whether you continue reading my story or not. If your decision is no, I wish you good luck in your search for the story you enjoy.

And man, when I read Sumire's doujin, the interpretation I had of her was that she was a lonely woman and most likely failed in love due to her visual impairment, and decided to create/shape a lover of her choice, that's why I think Ren was chosen in the Canon, he was someone innocent and without any love experience and she easily discovered this through a few questions, and easily fell in love with Sumire after a night of sex. So letting her 'guide' their first meeting was more like a strategy for her to let her guard down around Yuuji, making him pass her little test, remember that in his life as Noah he had senses that would easily surpass hers , even though he is no longer in his old body, he knows how it works here and knows how to circumvent it.

As for adding just one or two girls from each hentai, I never saw any point in an author who does that, I can respect it since each person has their own preferences and such, but if I'm going to add some world to my story it will be so that Yuuji stays with all the main girls. As for the secondary girls I could think about that or let the readers decide.

As for the system, I planned it to be a mix of the 'Strongest System', the 'Great Sage' and another normal system that releases tasks that he can or cannot do, it would be at Yuuji's discretion. So it's not that the system is useless, it's just that I needed to delay its debut a little, since in this part of the story it wouldn't be so necessary,

Thanks for the advice, but some of the worlds I put on the list are some of my favorite hentais, others were the ones I wanted to change the ending to (Otome Dori, Gakuen Ikenie, etc...) so I plan not to change them, sorry about that

It got better, as I changed some of the future powers I was thinking about giving him

Yes

Ankai no Umi

These are good skills, but the ones in the set I have prepared for the future are much more OP

You're welcome

Gakuen Ikenie

I'm just using his appearance.