Dragon Yashinatte Kudasai

One day, a college student named Murakami encounters a dragon named Ilsela who came from another world. Ilsela, who aims to be an "Ichiryumae," seems to want someone to "adopt" them while they train in the human world...!?" Eating, sleeping, and playing with a dragon. A relaxed fantasy in a six-tatami room.

(Source: Shogakukan, translated)