じょうばんまんさくじゃないです
常磐満作じゃないです
jōbammansakujanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of ときわまんさく

1. It's not constant/eternal/everlasting.; It's not always full/busy.

Negative
Polite
Casual Register
Usually Written in Kana