An unnamed man is reborn in a world of a fantasy dating sim. He becomes the unlucky, hapless, best friend character, Kousuke Takioto. All of volume one is the prologue, so we build up the story bit by bit. So rather than be satisfied with being the side character, our protagonist decides to fight his fate and become the strongest.
The book acknowledges the silliness inherent in a dating sim story. Where are the parents? Why is there an affectionate female childhood friend character? Why are the tropes the way they are?
Kousuke discovers magic and decides to improve himself. He can't cast fireball or anything like that due to his unique constitution. He can cast enchantment magic, and he has a massive mana pool. Taking advantage of those traits, Kousuke trains himself.
The book is well done. It is slightly erotic, but as long as you aren't a prude, it should be fine. I enjoyed it. Thanks for reading my review, and see you next time.