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 can't tell her that I knew she'd 
make trouble if I invited her...
لا أستطيع أن أخبرها أنّها ستفتعل مشكلة
...إذا دعوتُها
Ich kann ihn nicht sagen, dass sie
sicher nur Probleme gemacht hätte.
No puedo decirle que sabía
que causaría problemas si venía.
No puedo decirle que sabía
que la liaría si venía…
Je peux pas lui avouer que j’avais peur
qu’elle fasse des siennes.
Non posso dirle che se l'avessi invitata
la questione si sarebbe probabilmente complicata...
Não posso dizer que seria
uma bagunça se a chamasse...
Не скажешь ведь,
что лишних проблем побоялся…