Female lead and transfer student who forms an unusual bond with Tsubaki through her saliva, which she interprets as love sickness, eventually leading to a committed lifelong relationship.
Central couple bound by a supernatural drool exchange that synchronizes their physical sensations and emotions, evolving from accidental discovery to a deeply committed romantic partnership.
Youko acts as a familial bridge, discussing Mikoto's past and revealing her deep commitment to protecting Tsubaki, solidifying Mikoto's role in the family.
Ayuko becomes fascinated by Mikoto and forms a unique physical link through her drool, transitioning from casual classmate to a peer with a supernatural connection.
Aika's direct approach at the cultural festival forces Urabe to assert her position through a competitive sensory test.
Urabe's initial involvement is framed by a solemn duty to protect and guide Akira, adding a layer of responsibility to their bond.
Explore the full interactive character relationship map of Mysterious Girlfriend X