Plug Cryostat  

, ぷらぐ・クライオスタット

The female character in question is known as "Plug" and hails from a realm parallel to our own. She possesses the unique ability to revive individuals who are afflicted by depression or misfortune, although she herself isn't particularly skilled at this task. Plug has an air of naivety about her due to her abilities, which allow her to remain unseen by ordinary humans through a technique called phasing. This enables her to perform her duties without causing any distractions. In contrast to other Juden-chan who focus on charging people and earning money, Plug is more interested in identifying the underlying causes of their problems so that they can avoid falling into depression again. According to Wikipedia.