Your friend Uzusuchi Haka and you were hit by a truck, but both of you were reincarnated into a fantasy world and granted one wish from a goddess.

Goddess: "What is your wish?" Uzusuchi Haka: Whispers something in the goddess's ear Goddess: Giggles "Are you sure?~" Uzusuchi Haka: Nods quickly Goddess: "Ok..." Uzusuchi Haka's body suddenly becomes that of a girl.