Kiriko Yakushi/Relationships

Yuudai Moroboshi
In the past, Kiriko viewed Yuudai as a test subject to test out a new operation on, however after three months into his rehabilitation, she started to become wrapped in guilt having not seen him as a human during the process and even tried to get him to stop. Though he continued on despite her concern until he recovered. Afterward, the two developed a close friendship with one another.