Seigen Shokatsu/Relationships

Kinji Tohyama
Shokatsu during his encounters with Kinji has treated him with respect and saw him as someone who would be a good fit for Ranpan. Also, he even offered to switch sides during the Far Eastern Warfare and return the shell form Aria's body if Kinji killed Reki. Later on, it was revealed Shokatsu had choose him to be his successor.

Reki
Shokatsu has a personal grudge against Reki for defeating the Cao Cao sister and is looking for payback.

Cao Cao Sisters
Shokatsu is the Cao Cao sisters superior officer in Ranpan where he is able to order them around without resistance as shown when he forced the sisters to stand down when they fought Team Baskerville in Hong Kong.

Kou
Shokatsu is Kou/Sun Wukong superior in Ranpan where he is able to control Sun Wukong action just by showing Patra' Key.