Now if you want to understand his bows, or bow to him:
If you're new to living or working in Japan, social etiquette can be confusing - especially displays of affection! Read our guide first for some tips & advice.
interacnetwork.com
"Unlike in western culture, bowing in Japan, known as
ojigi, is an important etiquette that is learned from a young age.
Depending on the situation, a bow can be a small nod of the head or a deep bend at the waist. A deep, long bow indicates respect, and a smaller nod is usually less formal.
Bowing in Japan can be used to signify emotions, including appreciation, respect, remorse or gratitude."
Clive Baker.