In This Bizarre World, I'm the Only Straight One

You died. Then you were reincarnated. You thought you'd be like the protagonist of an ordinary light novel, transmigrating to another world, fighting monsters, leveling up, and eventually becoming a big shot at the peak of your life. But it turned out you were living in a dream. This was a world where homosexuality was the norm, and you, a heterosexual, didn't fit in. At first, since your parents were among the few heterosexuals, you didn't notice anything was wrong. It wasn't until you confessed your feelings to the older boy next door and he gave you an incredibly strange look that you finally understood. So that's why there were so many same-sex couples on the streets. Girls are cute and all, but you're heterosexual! So, disheartened, you focused on your studies and set out to develop a time machine to return to the past. And just like that, you, who only wanted to live an ordinary life, became a nationally renowned scientist. Reading Guide 1. As usual, this is a no-romance, harem-showdown story. The female protagonist shines on her own, is naturally irresistible, and attracts both men and women. 2. Homosexuality is the norm in this world. 3. I'll add more if I think of anything. Theme: Perseverance.