Event: Battle of Valentine! A Mind-Numbingly Sweet Battle (2019/1/31 - 2019/2/14)

Description: Right before Valentine's Day, Shizuru and Eriko realize that they both intend to give chocolates to Yuuki. With both of them determined to outdo the other, they decide to settle the question of whose love for Yuuki runs deeper -- not on the battlefield, but in the kitchen!

Main characters: Rino, Shizuru (Valentine), Eriko (Valentine)

Ending song: Super Chocolate