Perfect World manga volume 7 features story and art by Rie Aruga.

Things seem to be going more smoothly for Tsugumi and Itsuki - their complicated past aside, collaborating on a new project together seems to allow them an ease that eluded them in romance. On the morning of the ribbon cutting, however, there is a big earthquake in Tokyo, and Tsugumi can't reach Itsuki. In her panic, she turns to the only person she can think of to help her make sure Itsuki is okay...

Perfect World manga volume 8 features story and art by Rie Aruga.

After Itsuki and Tsugumi spend a night together in a car at the evacuation site, both Koreda and Nagasawa rush from Tokyo to their sides. Itsuki seeks refuge with Nagasawa, and while the former couple are separated again, Koreda’s concerns only continue to grow after hearing about their night in the car. And when things seem like they couldn’t get any more complicated, another figure from Itsuki’s past arrives…

Perfect World manga volume 9 features story and art by Rie Aruga.

Tsugumi and Itsuki decide once more to bet on their love. Although Koreda and Nagasawa are both heartbroken by this turn of events, they accept that the couple’s feelings for each other are genuine and stronger than before, and they resign themselves to their outcome. On the other hand, Tsugumi’s father continues to adamantly oppose their relationship. Itsuki pays a visit to Tsugumi’s father’s hospital room to gain his approval, but Itsuki may have his work cut out for him…