The slime Mikami and the Storm Dragon Veldora decide to give each other names. Veldora gives the slime Mikami the name "Rimuru," and Rimuru comes up with a family name for both of them: "Tempest." Then Rimuru uses his Predator skill to take Veldora into his body and analyze the "Unlimited Imprisonment" seal in hopes of breaking it... but this action sends a shock through the nations surrounding the Great Forest of Jura. With Veldora gone, there's a chance that the larger nations could become bold and invade the smaller provinces. With no knowledge of this, Rimuru leaves the cave and meets some Goblins.
The acquired skills Water Pressure Propulsion, 
Water Movement, and Water Blade
المهارات المكتسبة دفع ضغط الماء
وحركة الماء ونصل الماء
Kopplungsaufwertung von „Wasserdruckantrieb“,
„Flussreise“ und „Wasserschwert“.
Propulsión de Presión de Agua,
Movimiento de Agua y Espada de Agua
Propulsión de Presión de Agua,
Movimiento de Agua y Espada de Agua
L’acquisition des compétences
Data l'acquisizione delle abilità
As habilidades Propulsão a Pressão de Água,
Deslocamento na Água e Lâmina de Água
Навыки «гидравлическим ускорением»,
«передвижением в воде» и «водный клинком»