Isshiki-san wa Koi wo Shiritai.

Synopsis (en anglais)

The straitlaced and serious police inspector Isshiki has earned the respect of everyone around her, but lately, she hasn’t quite been herself at work. Whenever her coworker Rokutanda is around, she gets flustered and slips up! Having no experience with such complicated feelings, Isshiki decides to enter a pseudo-relationship with Rokutanda and figure out what this love thing is all about! (Source: Yen Press)