Mahou? Sonna Koto yori Kinniku da!

Yuri, a young man raised in a forest, trains until his body can withstand almost any kind of magic. When the beautiful elf Firia gets lost and arrives at his home, Yuri sees a chance to explore the wider world and sets off on a journey with her. Asked whether he can use magic, Yuri explains that he practices “muscle magic”: he spends magical energy to make his muscles unleash powerful effects. Firia points out that this sounds more like a feat of strength than magic. Together, the pair travel around the world as Yuri continues to develop his muscles.