Extreme summer heat is ravaging Tempest. Rimuru and crew visit a lake they've been told lies beyond the forest, and they change into swimsuits to start having fun... but Shion and Shuna seem dissatisfied with Rimuru's swimsuit. Veldora watches the gang from inside Rimuru's body as he plays a game of shogi with Ifrit. As the Storm Dragon, one who has never experienced swimsuits or water play, he struggles to understand what all the excitement is about...
plugging away at the analysis 
of Unlimited Imprisonment...
...أعاني من تحليل السّجن غير المحدود
und widmen unsere Zeit
der Analyse des Ewigen Kerkers.
je suis enfermé ici,
à analyser Geôle infinie en silence…
bloccato in questa Prigione eterna.
para analisar o
Aprisionamento Infinito...
пока я тут под замком 
сижу из-за этой «Вечной тюрьмы»…