What if instead of reaching the top, Chito and Yuuri had to descend to the bottom? Basically, what if Girl's last tour had a happier ending, and characters from Tsukumizu's other works. (INCOMPLETE)

Following the day after they reached the top of the world, Chito and Yuuri are faced with a life or death decision as they decide to journey towards the center of the mysterious layer. SPOILER ALERT: The story continues right after the ending of the Girls Last Tour / Shoujo Shuumatsu Ryokou manga! (Chito x Yuuri pairing)

Chito and Yuuri discover a coffeeshop.

The duo encountering an old man and his garden on the rim of the ruined city. Life, death&hope. Memento mori.

Yuuri and Chito stumble across and interesting area where they learn a new way to have fun.

While driving through a new level, Chi found herself thinking of a holiday called 'Christmas.' Interested in the idea, the duo decides to celebrate the holiday the best they could.