I Rely on the Male Protagonist's Waistcoat to Save the World.

It's roughly the story of Chuuya and the heroine traveling back to the cursed world to change those tragic plots! ——This part will be completed! There are some miscellaneous extras later, this part is just for the sake of fate! It's a spin-off of "I rely on the male protagonist of B-game's vest to save the world"! Purpose: cherish life, love life