(my impressions after watching full episode 1). I just watched episode 1. I liked it. The scene in which he imitates the sound of a cat, funny. They both have chemistry, yes. Actor is actor, convinces us of what needs to convince us for the story.
P.S: In this first episode and the openings and musical ending do not indicate any tragic ending. It's all light and sweet here, yet. (But I know that the next move will be sad, because here, he looks for the antidote to save his father, and later on he will lose his mother He will not have an easy life. Is his brother the villain?