Magical ★ Explorer - Eroge no Yuujin Chara ni Tensei Shita kedo, Game Chishiki Tsukatte Jiyuu ni Ikiru

There's a legendary Bishoujo Game that has become popular among Japanese gentlemen. Its name is "Magical★Explorer" or Magiero for short. The game's protagonist has a cheat-like power with 12 different beautiful heroines to flirt with, including additional 12 heroines from the DLC, a harem of 24 beauties. I have become that protagonist...! Not! Instead, I have become the third-wheel character who always laughing like an idiot next to him. There's no heroine that would lay their eyes on me.