I'm Just an NPC in the Game, So Why Are They All Getting Close to Me?

[Urban entrepreneurship + campus life + daily life + yandere heroines + multiple female leads, but no womanizing]

Reborn in this world, I play a nobody side character in this dating-game world. The game doesn't even mention my name.

But can someone explain why I'm getting the protagonist's storyline? I only want to start a business!

The older woman I share a rental with;

My childhood friend and playmate;

The girl I bumped into;

But something seems off about them. They don't seem the same as they are in the game. They're more vivid, but it feels like there's more to it than that.

A journey unlike the game, yet somehow like it, begins here.

Don't come any closer! I only want to start a business!