The episode opens to Tamami begging Haruma to take an emergency job position. After much nagging, he reluctantly agrees. As a good brother would, he calls Choco and tells her he'll be home late. Choco seems sad, but decides to go shopping.
On the way, she meets the two boys she played badminton with in episode 2. Apparently they're playing badminton again - and managed to get the shuttlecock stuck in a tree. Choco gets it down for them, and they leave without making sure she gets down safely. On the way down one of the branches breaks, and Choco is left hanging by one arm. Just as she is about to lose her grip, however, Sandbag comes along.

Actually, he's Kakeru-kun. Let's call him Sandbag for now.
As thanks for being her sandbag, Choco buys Sandbag an ice cream cone. Sandbag's obviously attracted to Choco, but he's a MAN so he's gotta act stand-offish. Anyway, he ends up sharing the cone with Choco…

INDIRECTU KISSU~
As Haruma walks home, he reminisces about the day's activities. Instead of being paid money, Tamami-senpai pays him in t-shirts and some movie premiere tickets. Haruma vows to never take a job from Tamami again. (Sure, okay.)
When he reaches their apartment, Choco greets him fresh from the shower.

The next day, Haruma visits a bar which he apparently vists often. It's directly across from Ayano-san's flower shop. After serving Haruma a drink, the bartender plays some really lame card trick, which results in Ayano-san entering the bar shortly after. Conversing with the bartender, Ayano mentions how she wishes she could go to the movie premiere.

Yes, that movie premiere - the one Haruma has tickets to. Haruma hastily invites her to go.
Later that day, Haruma and Choco go to the public bath because there's a hot water outage. At the bath, Choco sees Sandb- I mean, Kakeru-kun. Apparently he lives there. Choco begins changing within plain sight of Kakeru-kun, causing him a lot of mental anguish.
As Choco is about to cannonball into the bath, she's stopped by a woman already there. The woman teaches Choco all about public bathing, including the famous 'washing each other's backs' ritual. Later, she reveals her name as Midori.

On the way home, Choco says that the public bath was fun and she wants to take a bath together with Haruma. Haruma stutteringly refuses.