M is drinking at Bar Lighthouse when he is suddenly tasked with looking after Sawada's cat. However, the next morning he cannot find the cat anywhere!

The story picks up two years in the past when F and her sister meet their grandmother for the first time.

M hears that a TV producer he used to work with is ill, so he visits his former company. On his way back, M finds F's sister at BAR Lighthouse.

New Year travels are in season, but M has no one to see and nowhere to go. He has a flu, so Kaoru asks Fukuo and Izumi to deliver food to him.

It is past midnight at BAR Lighthouse. The only customers are M, a beautiful female fan of his and Izumi.

M's editor tells him to create his first ever social media account. Despite M's worries, it gains many followers.

M learns that his girlfriend has been missing since Halloween, and is told her friends might know where she is. M realises he doesn't know of a single friend in her life.

M searches for his missing girlfriend, and crosses paths with strange members of the public, thrusting his quiet life into chaos.