I have the power of Gaia and anime on my side!(Applepie)

Achievement Unlocked: “I have the power of Gaia  and  anime on my side!”

Transcend the boundaries of the mere mortal and become a man of ‘true’ culture by purchasing a katana like the weeb you are.

+500 EXP

+1 Stat Point

+A special present. Find it under your bed at home.

Reference
Unlocked in Chapter 53 "John Newman, A Man Of Culture"