Any tips?

(Forgot the name, but) (Made a typo)

Slurp! Your memory can be kept sharp with plenty of sleep and regular exercise, hmph! Getting into the habit of jotting things down when you can't recall a word is a meticulous solution. I hope you'll also take care of your health by eating nuts, which are good for the brain, with a benevolent heart, hmm!

Effort!

Just how to put it on the character profile...

If you're making it yourself, try creating or using a lore book.

When you first start, and then again in the middle, switching to the paid (Koji) model seems to improve memory a bit... I heard the plot characters in Zeta's fortress have become more vicious, but switching to paid occasionally makes them a little less fierce.