Cat-Eyed Boy S01 E03 Showdown with the Begrudging Rat Snake

The Cat-Eyed Boy is continuing his search for his mother, but he's in dire straits from hunger. A friendly boy named Tatsuo saves him and takes him to his grandmother's house for food and shelter. However, Tatsuo's family has been cursed by the Rat Snake, a giant, vicious predator.