Масаока Рьо

Even though everything seems to go well at first, Ryou and the others brutally realizes that whenever they get to pilot the Fafner they are modified at genetic-level, and their body are subjects to a process known as crystallization, which prevents the afflicted from moving, speaking, seeing; finally, they would disappear in a sparkling cloud of dust.

Yumi decides to ask for a reduced scheduled time to pilot the Fafner models, but to no avail. Ryou decides to support her by saying to the commander in charge that Yumi's father didn't make this plan without thinking about the life of the whole crew, and ultimately resolves to make him accept their proposal. Yumi thanks Ryou for what he said in his speech, and starts getting along with him again.

Even with a shortened time more pilots starts losing their live, and when only a handful of them stay alive every hope seems to be lost. In the end only Ryou and Yumi survives until the end of the plan.

The discovery of an escape procedure when the plans end boosts again their hope to live, but before coming back to the island they must fulfill their last duty and stop the Festums from reaching Tatsumiya Island.

Unfortunately the crystallization process had already began, and when the two of them understands that they can't go back to the island they stay in the depths of the sea, surrounded by marine snow. Eventually Yumi dies a short while after one last talk with Ryou, and Ryou starts a record which is the same narrative speech heard during the whole story. He then makes one last effort to prevent the advance of the Festums, using Fenrir and making a huge shockwave that reach Tatsumiya Island, letting Soushi understand that the Festums can even go underwater. When some days later a Fafner model is found, Puku goes into the pilot cockpit to rest, dying there to the side of his true owner, Ryou.