Entering Another World: Upgrading with the Master

Do you think Erha will only demolish homes? Wrong! My brother. You will find out when Erha learns martial arts. It can dismantle the entire world, such as mages, Another example is God. Let's see how the protagonist leads his master to upgrade when he ventures into another world. There is competition and tenderness, coldness and teasing! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.