The Interstellar Savior of the Concave and Convex World

I'm sorry if it's my first time to write an article. Please understand that the heroine doesn't have CP and can fight on her own. If she's not afraid of knives, after all, the heroine can't stay in this world forever. But even so, the small CP is still very sweet. It's a coming-of-age story. The protagonist grows all the way. Although it's a growth series, it has the intensity that it should have. It's impossible for a strong girl to write.