Rika moves in with Naoya and the others, and insists that sleeping in the same room with him in a non-sexual fashion should be completely permissible. Naoya agrees, but only if all the girls get to take turns sleeping in his room in a non-sexual fashion.

Shino moves in with the trio, intended to begin work on breaking them up. Saki tells everyone stories about how they met in middle school., which involved Saki making Shino play video games. It turns out Naoya also has a story about how he met Shino...

Rika kidnaps Naoya after drugging the others, hoping to seduce Naoya while the others are away. Naoya firmly rejects her advances, but this only inspires Rika to keep trying harder. Naoya then realizes escape is the only way out.

Rika, who’s outed as a popular MeTuber, insists on dating Naoya. When he rejects her, she decides to try to live at his home along with the other two.

Saki returns to Naoya’s place and plays some games with Nagisa, who is utterly horrible at it. They notice that a gaming MeTuber seems to have the same uniform that they do.

Saki tells Naoya that Rika’s apparent crush on him is only the result of her being in heat. She insists that this is a real thing, and Naoya buys it.

Nagisa had insisted on supporting Saki on the hot spring vacation, but when Saki confronts her about it, she begins to speak her mind.

Naoya and the girls depart for Okinawa. The trip gets off to a bumpy starts when their plane encounters turbulence, and Naoya panics. Once they get to their vacation home in Okinawa, the girls put on their swimsuits.

Saki realizes Rika is serious about Naoya, and begins frantically looking for ways to keep her from joining their relationship.

Everyone's at the fireworks festival, but Naoya and Saki have been separated, foiling Shino's plans. Instead, Naoya has ended up watching the fireworks with Nagisa despite their plans to the contrary.

Shino and Naoya are stranded on an uninhabited island, and Shino has ended up naked again. Has the time finally come for Shino to confess her feelings? Meanwhile, Saki and the others have realized that Naoya and Shino are missing.

Shino is frustrated and furious about Naoya and Saki's failure to kiss at the fireworks festival. Saki wins a bunch of camping gear and a campsite coupon, so everyone decides to go enjoy a camping trip.

As a way to clear the air after Rika kisses Naoya, he, Saki and Nagisa decide to go on vacation at a hot spring.

Naoya Mukai is in a relationship with Saki Saki, but another girl, Nagisa Mizuse, asks him out. He makes the unthinkable decision of asking them if they would be up for both dating him at the same time.