Seduce the Mc’s Entire Harem With [ Add Setting ] Ability

As soon as I entered high school, I had been struck by lightning, but then I awoken a special ability. It was the ability to add settings. I could see message windows above the heads of people around me, and I could add settings the main heroine. There are at least three main heroines. This world was apparently a harem-style school romantic comedy.

I couldn’t stand that. With this ability to add settings, I’m going to steal all of the main protagonist harem!

This is a story about me doing whatever I want with the ability to add settings, which is different from ‘hypnosis’ or ‘changing common sense.’

*There are various restrictions on the ability, so it feels like I’m slowly corrupting the heroine.