Tomoaki Ikeda

In the middle of class at a certain school, Rumi Yokoi, a diligent student, has her in-class life turned upside down when her desk mate Toshinari Seki begins to play by himself at his desk in class. Although Rumi is irked by Toshinari's distracting yet intricate playtime, she finds herself being drawn into his interesting hobby. Never being able to focus, Rumi observes Seki's stunning ways of slacking off in class.

A terrorist group invades a laboratory containing a deadly bacteria and destroys the lab with an explosion. They later announce via the internet they have gained possession of the bacteria and declare themselves to be the Red Siamese Cats, a terrorist group that was eradicated a decade ago.

Iketani missed an opportunity to see Mako-chan and hates himself for never calling to say he was sorry. By chance, he runs into her 6 months later, and the situation is awkward. Iketani does not have a chance to talk, but both want to talk, so they arrange a second meeting. Iketani goes to the meeting place early, but an old man was left behind from a tourist bus, and asks Iketani to catch the bus for him. Iketani, being a nice guy, can't say no.