Blank Subscription List

(Comes at max level)

Valentine's Return Gift from Musashibou Benkei.
Increase Lancer Coin Choco drops by 2.
[Revival: Valentine's Event 2018 Lite Only]

Valentine's return gift from Musashibou Benkei.

A blank subscription list.
The list was autographed by Benkei, who had no use for it anymore. Or so it's said...
The word "by" makes it absolutely suspicious.