This is going to be a short novel.
I really wanted to write a character like Ryu, so I wrote this story.
You'll like it—our MC doesn't get sudden power-ups, no golden finger, nothing handed to him. Everything is earned from scratch: power, character development, and growth.
Yes, there is romance here, but no harem. I don't enjoy reading or writing harem stories.
Ryu is my favorite character, and I hope you will like this novel too.