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...
Why's a master swordsman like you 
talking like such an old man?
لماذا معلّم بالمبارزة بالسّيف مثلك
يتكلّم وكأنه عجوز؟
Wieso redet ein Schwertmeister,
als wäre er ein Opa?
No hables como un anciano, espadachín.
No hables como un anciano, espadachín.
Voilà qu’un maître épéiste
parle comme un vieux…
Ma come può uno come te dire certe frasi da vecchio?
O que o mestre espadachim está falando,
que parece até um velhinho?
Вроде мастер меча, 
а болтаешь как дедуля какой-то!