Tatsuzawa

Tatsuzawa (龍沢) is a new recruit at Jigokumeguri Systems Engineering, Inc., the company that Kobayashi works at. She was part of the team Kobayashi led that allowed her to gain promotion.

In Chapter 106, Tatsuzawa's true identity as a dragon from the Harmony faction is revealed.

Personality
Tatsuzawa very rarely expresses herself, and speaks with few words. As a result, Kobayashi is not aware that Tatsuzawa is a dragon, until she is told by Telne. Kobayashi also appears to show jealousy at the fact that Tatsuzawa is "more boring" than her.

Tatsuzawa has also come to prefer living on Earth, and as a result, had no second thoughts about the consequences after leaking intel about the Harmony faction to Azad and Fafnir.