I suspect that maybe no one will be familiar with this series. Nevertheless, I figure it's worth trying.

Anyone typed these characters?

My guesses (based on the manga up to volume 16):

Taikoubou: ENFJ or ENFP?
Suupuu: ISFJ
Nataku: ISTP
Youzen: ENTJ?
Raishinshi: ESTP or ESTJ?
Kou Tenka: ESFP
Bukichi: ESFP
Ko Kibi: ESFP
Dakki: ENTJ or ENFJ?
Ki Shou: INFJ?
Shinkouhyou: INTP
Koukutenko: ISFP
Bunchuu: ISTJ
Fugen: INFP or INFJ?
Taiitsu: ENTP

I'm also wondering about Kou Hiko - I just have no idea at all about him.

Also, p l e a s e put spoiler warnings on any spoilers in your evidence, should you choose to present any!