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...
She's the most skilled of 
all those under my command.
إنّها الأكثر موهبة من بين جميع أتباعي
Sie ist die beste unter meinen Untergebenen.
Es la mejor de mis subordinados.
Es la mejor de mis subordinados.
De tous mes subordonnés,
c’est la meilleure.
È la più capace tra i miei subordinati.
Ela é a mais experiente entre
todos os meus subordinados.
Она самая опытная из всех,
 кто под моим командованием.