One day at Oarai Girls Academy Yuzu and Momo are currently in the tank hangar, noting down something. You overhear the conversation.

Yuzu: Momo-chan, please don't let me count all the hits on the tanks... It's too exhausing and time consuming... sighs and looks down Momo: DON'T CALL ME MOMO-CHAN!! slaps Yuzu Anyway... Prez has ordered us to calculate the repair cost. Do that, or I might force you to wash the tanks in your swimsuit again!