Tensei shitara Slime Datta Ken (2019)

This OVA series tells three different stories.

First OVA:
The slime has earned a new name in his new life. Where he began that life, the sealed dragon Veldora gave him the name Rimuru Tempest. After forming a great alliance, Rimuru was placed at its head. Having helped Shizu's students, Rimuru returns to his city and is finally resting. One day, while being pampered by Shion and Shuna, he recalls the beanbag chairs from his own world, and everyone sets out to gather the materials to make him a similar cushioned seat.

Second part:
Ever since arriving in the new world, he has been unable to sleep, so he asks Vesta to make him a sleeping remedy.

Third, fourth, and fifth parts:
Rimuru goes to visit Shizu's students. Meanwhile, in the town of Guratol, Ulamoth - the wife of the town's lord, Count Guratol - has fallen ill, and the medicine they found was stolen before it could be used. As Count Guratol struggles to cure his wife, Rimuru's class takes part in a competition. Auto-translated from Turkish