Nukumizu Yoichi was also in the movie Love*Com in 2006. He played the teacher who is super insecure about his hair because he's actual bald and wears wigs.
It's a bit dark but also has humor added in.. so I found it evenly balanced.
Ehh I wouldn't find it relaxing really (but it's not super stressful). I would suggest you watch it when you feel like watching something new. It's not like your typical drama.