Mashimo is a senior in university, wondering whether he should apply to the school's graduate program. Intending to collect papers to aid him in the decision, he goes to his professor's office only to find a new face greeting him at the door. Mashimo later finds out that the strange man he met in the office earlier is Yuuto Tanaka, a first-year star graduate student from another university. Mashimo quickly realizes that the personality he sees when he sees Tanaka is not the same personality that everybody else sees. But one night, as Mashimo stumbles home and wanders into an unknown street, he runs into - is that Tanaka?!