The day's horoscopes for Aries predict that the day will be so good they just might die from all the goodness, there's a chance they'll get an enormous amount of money, along with a kiss of absolute happiness, and their lucky item is a flightless bird decoration. The Vice Principal, who is an Aries, gets word of an escaped ostrich and sets off to try an catch it.
Meanwhile, on the roof, Kusuri, who is also an Aries, shows off a toy she got from a gacha machine of the title character of her favorite show "Pepepe Pentarou". Explaining that his name and eyebrows are similar to Rentarou's (who's wearing only his swim trunks), Kusuri starts playing with Pentarou.
She starts by having him climb Shizuka before hopping onto her book, pretending it's a giant bird. Pentarou falls off and lands on Hakari's chest and, after Kusuri notes what could've happened if he landed on Karane's chest, climbs down Hakari before noticing a "cave" at the bottom. Karane stops him from exploring, prompting Pentarou to summon the genie "Kusurin" to fight against the Straight Man monster "Karagon" and rescue the princess it kidnapped. Kusurin, however, is no match, and so Pentarou sets off to find help.
To this end, Pentarou asks genie "Kurumin" to escort him to Mother AI and, after escaping her attempts to eat him, feeds her a piece of HiChew, allowing him to reach Mother AI. She advises Pentarou to target Karagon's carotid artery, prompting him to tickle her there. This proves ineffective, so she advises blocking her respiratory system. Genie Kusurin transforms herself to inflict Marshmallow Hell on Karagon, who quickly yields in defeat.
After a brief hangup while the neutralizer wears off, Pentarou rescues Princess Hahari, who rewards Pentarou with a Briefcase Full of Money. However, the money quickly blows away in the wind, taking Pentarou with it. Kusuri catches him, only to stumble over the railing, narrowly avoiding falling off when Rentarou catches her. Rentarou, who is a Taurus, was told by his horoscope that his luck item was his school issued tight swimsuit. As it turns out, wearing only his swimsuit enabled him to reach Kusuri before she went overboard. Relieved, Kusuri gives Rentarou a kiss as thanks.
Meanwhile, the other Aries is actually on the verge of death.
Tropes:
- Briefcase Full of Money: Pentarou's reward for "rescuing" Hahari.
- Marshmallow Hell: Kusuri "defeats" Karane by this method.
- The Mind Is a Plaything of the Body: Kusuri is embarrassed about playing with the Pentarou doll in her older body.
- Product Placement: Kusuri feeds Kurumi a Hi-Chew to get her to play.
