Kaoru Tono heard a rumor: The laws of space and time mean nothing to the Urashima Tunnel. If you find it, walk through and you'll find your heart's desire on the other side...in exchange for years of your own life. One night, Kaoru just so happens to find himself standing in front of a tunnel that looks suspiciously like the one the rumor describes. He finds himself thinking of Karen, the sister he lost in an accident five years ago. To Kaoru's surprise, he's been followed by the new transfer student Anzu Hanashiro, who promises to help him experiment with the mysterious tunnel—but what does she want from Kaoru in exchange? And what will he have left to give, after the tunnel's done with him?

Dog Pool. Worried about her weight, Karen Inukai decides to head to the pool and invites her friend Mike Nekotani to come along. Unbeknownst to the dog-phobic Nekotani, their destination is no regular swimming pool—it is a dog pool, where Inukai plans to play with her beloved Pochita. Unfortunately for the trio, Nekotani's fear of dogs soon puts their day of peaceful recreation in jeopardy. Gakuensai Date. The school festival is here, and Inukai has finally gotten a break from working at her class' dog cafe. She takes this opportunity to bring Pochita on a date, but the two immediately run into Inukai's self-proclaimed rival for Pochita's affection, Usagi Tsukishiro, who insists on tagging along. Their tour of the festival attractions soon brings them to a haunted house. When the horrors inside prove too much for both Inukai and Tsukishiro to handle, it is up to Pochita to calm the girls down.

Seina's epic misadventures are moving from the depths of space to his home on Earth. While he's made just as many friends as he did enemies on his journey, it's time to go back to those he loves on his own planet. But he quickly learns that things aren't the same as they used to be.

Due to severe fatigue and exhaustion, the Azur Lane's commander collapses and enters a coma. To prevent unrest and anxiety from breaking out, the secretary ship Queen Elizabeth decides to fill in for the commander in secret alongside her longtime friend Warspite and a select few. However, Queen Elizabeth soon realizes that taking on the mantle of leader is far from an easy task. As she strives to make sure everything goes smoothly while keeping the truth concealed, the situation gradually worsens, with more shipgirls beginning to suspect the commander's whereabouts.