Toumei Answer

This is the eighth song of the series. The story where one averts one's eyes.

Background
Nicovideo broadcast is not available because the PV was originally meant to be exclusive to the album Mekakucity Days. A person who uploaded the video onto Nico Nico Douga was posing as Jin and revealed as the fake he was later on.

It's is the story about how Shintarou became a hikikomori (recluse/shut-in).

Shintarou was a student with straight A's when he met Ayano in school, who he didn't want to get close to, but ended up doing so anyway. Ayano had bad grades and called herself stupid. They then enter their first year in high school together. Although she always managed to cheer him up and seemed happy, one day Shintarou finds Ayano crying, but he doesn't know what to do and retreats. The next day he finds out she died, when people bring in flowers for her. It is revealed she committed suicide for an unknown reason. Shintarou goes up to the roof of the school and finds one of the paper cranes that she made. The paper crane was the test paper Shintarou got 100 on, which he tore apart. Her death put him in so much shock that he wanted to escape reality and enclose himself in a digital world which he did by locking himself in his room and becoming a NEET.