After finally recovering at home from a three-day cold, Yūko panics when she learns of tomorrow's school test. She struggles against her lazy-like behavior while trying to study but ends up writing poems. The Vice-principal has some nostalgic moments concerning his lonely and blurred past. The Professor makes a super glue to trap Sakamoto and Nano, but not only does she trap them, she also traps herself, almost killing Sakamoto in the process. Later, the Professor plays "Who is it?" with Nano. Sakamoto leaves the room, leaving the two alone, only to trap himself again on the super glue. Yūko tries to relax and remain calm in order to focus and resolve the test, but she runs out of time before that happens.

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