|The following section/s may deal with the main plot of the anime.|
Michiru is shown to be moderately kind however she is very Tsundere towards Isla due to her jealously over Tsukasa. Michiru cares deeply for Tsukasa and does anything she can to support him.
Before the start of anime series, Michiru was formerly in the care of a Giftia acting as her father. However, her father reached the end of his lifespan whilst she was in his care, and thus he became a wanderer. Isla and Kazuki Kuwanomi were assigned to Michiru's case, and Kazuki received an injury trying to recover Michiru's father-turned-wanderer. Because the retrieval went south, R. Security was called in to eliminate Michiru's father. This situation and the following developments led to Michiru disliking R. Security, but respecting Terminal Service. She has stated that this incident was what made her want to join the company.
Michiru was really shocked when she found out about Isla's remaining life span, which was only about a month. She did not know about this and felt guilty toward Tsukasa and Isla. Michiru suggested the other Terminal Service employees to make a farewell party after Tsukasa and Isla do their last job.
- Tsukasa Mizugaki- Michiru has been shown to have feelings for Tsukasa and has expressed jealousy when she saw him with Isla. Upon speaking with Tsukasa one night and hearing his reasons for loving Isla, she assured him that she would be cheering him on in his pursuit of Isla.
- Kazuki Kuwanomi - Kazuki was the one in charge of retrieving Michiru's father and continued to pursue him when he soon turned into a Wanderer. When she found Michiru and her guardian, she tried to approach them without attacking them until Security appeared and violently attacked her guardian. In the process, Kazuki received a serious injury in her leg that makes Michiru feel guilty. After her guardian was retrieved, Kazuki continuously came to visit her, inspiring her to eventually work at Terminal Service.
- Eru Miru - Michiru is Eru's friend and always keeps an eye out for her and tells others not to mind Eru's perverted schemes.