One day, when Shuna and Shion are fighting over Rimuru's squishy slime body as usual, Rimuru comes up with the idea to make a cushion in the shape of his slime form. He travels around Tempest to see if his friends know of any good materials he can use, and he learns that a special type of sand found along a lake shore in the forest is exactly what he's looking for. So he sets out to collect some sand... but a monster is waiting for him by the lake!
I told you, we're just going to a lake...
...قلتُ لكم أنّنا سنذهب إلى بحيرةٍ فحسب
Ich habe doch gesagt,
dass wir an einen See gehen.
Solo vamos a un lago.
Que solo vamos a un lago…
On va juste voir un lac…
Ho detto che andremo solo al lago...
Já disse que vamos a um lago...
Говорю же, на озеро…