Prutianu Adrian's Key Ideas from Demon Slayer: Kimetsu no Yaiba, Vol. 1
by Koyoharu Gotouge,Ryoji Hirano

“If you can do one thing, hone it to perfection. Hone it to the utmost limit.”

“Growing old and dying is what gives meaning and beauty to the fleeting span of a human life. It’s precisely because we age and die that our lives have value and nobility.”

"There's no other way to go but forward."