First Air Date: July 08, 2012
|First Aired on||:||2012|
Episode 11.5, an OVA bundled with the third volume of the manga.
0x01 What Everyone Needs (July 08, 2012)
Hotaro's sister returns home, and sets her lethargic brother up with a temporary job filling in as a lifeguard at the city pool. Satoshi invites Eru and Mayaka out to see Hotaro at work, and the group stumble upon a minor mystery to be solved.