Western Fantasy: The Possessed Blonde Girl Is Acting Strange

(Invincible protagonist + loli + Western fantasy + no saintly do-gooder + weak blurb)

Noel transmigrates into a sword-and-magic fantasy world, taking over the body of Rachel, a blonde loli, and runs into all kinds of trouble.

Rachel: “Noel, even when you're this tiny, you're adorable!”

Noel: “What the hell!!”

…

Rachel: “Noel, will we be together forever?”

Noel: “Yes! We'll be together forever!”

In the basement, Noel stares at the blonde loli in front of him, her eyes vacant. He nods frantically, feeling like he might burst into tears.

So how did things end up like this?