I Was Reincarnated as a Mob Character in an E*oge Game, and While I Was Cheering for My Favorite Losing Heroine’s Love From the Shadows, I Somehow Managed to Destroy the Scum Protagonist’s Harem Entirely

I found myself reincarnated as Kageyama Hayato, a mere mob in the erot*c game “Pure Kiss mariage”. Prior to my reincarnation, I was a childhood friend of Aizawa Yuichi, the main character of “Pure Kiss,” and I was the biggest fan of Hoshikawa Natsumi. However, Yuichi, who is a s*umbag, treats Natsumi as a convenient woman and easily switches her to other heroines in every route. I was going to support Yuichi and Natsumi from behind the scenes so that they would step out of their stalemate and get together after their reincarnation so that Natsumi would not have to go through that. First, I would use my weakness to blackmail Mizutani Rei, one of the main heroines who would be an obstacle ...