A Story About Being Reincarnated as the Tutorial Boss of My Favorite RPG Game and Somehow Getting into a Lovey-Dovey Relationship with a Beautiful Boy Hero

One day, when Shima Touri woke up, there was a god in front of him. Apparently there was a mistake, so he was being given the chance to be reincarnated into a world of his choice—so he chose to be reincarnated into his favorite RPG game world! But right after reincarnating, he found himself as a tutorial boss, and he had no idea why! Anyway, when the hero finally showed up, he thought he'd just go along with it, but the story's a bit different than expected, and the hero has an incredibly androgynous appearance and is cute and all, but is male. But male. He's not into that sort of thing!