If you are looking to dive deeper into this series, I can help you with: A (Magic and Skill Points)
Kousuke Takigawa did not choose the life of a background character; he was thrust into it. After a sudden, unremarkable death in his previous life, he awoke in the world of "Magical★Explorer," a legendary Eroge (erotic game) he had spent hundreds of hours mastering. However, he wasn't the handsome, overpowered protagonist destined to win the hearts of every heroine. He was the "best friend" character—the comic relief destined to stand in the shadows. If you are looking to dive deeper into
He uses his memory of the game’s mechanics to find rare mana-regeneration spots. unremarkable death in his previous life