Yotsuya and Ichinose are enjoying a hot afternoon when they recall the time that the tenants of Ikkoku-kan and Mitaka go off on a cruise to party hard aboard Mitaka's new boat; however, the boat falls apart, and everyone is shipwrecked on a deserted island. With everyone up to their usual antics and shenanigans, what can happen in such a desolate place?
Characters & Voice Actors

Godai, Yuusaku
Main
Futamata, Issei
Japanese
Ichinose, Kentarou
Main
Sakamoto, Chika
Japanese
Ichinose, Hanae
Main
Aoki, Kazuyo
Japanese
Otonashi, Kyouko
Main
Shimamoto, Sumi
Japanese
Roppongi, Akemi
Main
Mita, Yuuko
Japanese
Yotsuya
Main
Chiba, Shigeru
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