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 would Great Rimuru take Soka instead 
of me, the all-rounder who excels
لماذا يأخذ ريمورو-ساما سوكا بدلاً منّي
أنا، الشّامل الذي يبرع
Wieso hat Meister Rimuru
Alleskönner zu Land, Wasser und in der Luft
¿Por qué el señor Rimuru
no me eligió a mí siendo todoterreno?
¿Por qué el señor Rimuru
no me eligió a mí siendo todoterreno?
Pourquoi maître Limule
ne m’a-t-il pas choisi,
Perché il Grande Limur non ha portato con sé il sottoscritto,
colui che ha sempre la meglio sulla terra, in acqua e in aria?
Por que Rimuru-sama não me levou?
Eu sou versátil, viajo por terra, água ou ar!
Почему Великий выбрал не меня,
мастера суши, воздуха и воды?!