Sweetheart ~The First Date~

Natsuru gets roped into a date with Shizuku and the two of them go to the aquarium together. However, because Natsuru is the stupidest fucking person ever, Shizuku constantly has to remind him throughout the episode that they are going on a date, and that she's not secretly doing some kind of surveillance to draw out White Kampfers or trying to screw him over.

At some point in the episode, Mikoto gets jealous and punches him into a wall, demanding to know if its true that he went on a date with Shizuku. He tries to deny it, but Shizuku leaves him hanging on that end.

At the end, Shizuku sees a little trinket that Natsuru bought for her in the aquarium gift shop, a tiny sea-slug, and thinks that maybe he actually he noticed her.