Magical Explorer - Eroge no Yuujin Kyara ni Tensei Shita Kedo, Game Chishiki Tsukatte Jiyuu ni Ikiru

Synopsis:

A fabled game called Bishoujo has gained popularity among Japanese guys. "Magical★Explorer," or Magiero for short, is its name. The protagonist of the game has the ability to flirt with 12 different gorgeous women, and 12 more from the DLC, giving him a harem of 24 beauties. That protagonist is now me. Not. Rather, I have turned into the supporting character who always laughs like a fool beside him. Naturally, my initial state was one of sorrow. Naturally. I could have all 24 heroines and unmatched cheat power if I were the main character. However, no heroine would ever set eyes on me because I am the third wheel. However, I no longer give a damn about the main character and his ladies. Why? since I learned about magic. I developed an interest in it while I was using it. My goal is to become proficient in it. My goal is to get the strongest. So I made a decision. Before I beat the living daylights out of that cheat who can solo the Demon King, I would forgo half of my role as a protagonist's companion in order to practice my powers. I was training with that in mind, but I keep getting closer to the heroines for some reason, and I am not sure why, but I keep running into situations where I feel like the protagonist of an Eroge.