Bullets and a Gun

(Comes at max level)

Valentine's Return Gift from EMIYA (Assassin).
Increase Assassin Coin Choco drops by 2.
[Revival: Valentine's Event 2018 Lite Only]

Valentine's return gift from Emiya (Assassin).

A submachine gun and a few bullets are casually strewn about.
It's probably difficult to obtain such a thing legally...but how to handle it will be up to you.