In the streets of the floating island city, a young girl is chasing a cat. Chtholly suddenly falls off a roof but is saved by the last surviving human, a man named Willem. She asks him to guide her to a place she wants to see. "Yeah. I've gotten my wish, along with some good memories. I can go without regrets now."

Willem learns that Chtholly and the others are Fairies and the weapons used in the battle against the Beasts. In recognizing the enormous fate resting on these young girls' shoulders who disregard their own lives, he remembers his past. Chtholly asks Willem to listen to her final request. "If I were going to die in five days, would you be a little nicer to me?"

Explaining the relationship between the Fairy and the Holy Sword, Willem shows Chtholly a different way to use Seniorious in battle. However, he soon collapses to the ground due to the poor state his body is in... "Trying to find a way for you to avoid opening the Fairy Gate and dying."

Willem is distracted and distraught as the girls are off to battle. Due to a dream one of the girls has, he is required to visit Corna di Luce so she can be examined. "Are you worried about Chtholly and the rest? Half a month has passed without any word."

The battle rages on Island-15 when an unknown Beast suddenly emerges. Despite the retreat order being given, Chtholly charges at the monster but is taken aback when the voice of a young girl echoes in her mind... "I'll be waiting, so you had better come back."

Chtholly regretfully goes back to the Fairy warehouse without Willem, while he meets with some surprisingly older acquaintances. Souwong, cursed to live eternally, explains how the world Willem now lives in came to be and what his plan for the future entails. However, reminiscing with his former companion is not on Willem's mind... "Right now, I just want to hurry up and get back to them."

Grick meets Nopht and Rhantolk, two Fairy soldiers charged with guarding the salvage expedition to the surface. Rhantolk ponders the meaning of her existence with regards to the presence of the Beasts. "I already consider you my kids, more or less."

Willem is called to the floating island 49 base, and ordered to select a Fairy soldier to send to the surface in aid to the salvage operation. However, he decides he is done waiting for others to come home and he will accompany her on that mission. "I was ordered to send a Fairy soldier to the surface."

Things continue to get worse for Chtholly, who bravely decides to live in the moment. Meanwhile, the rescue operation to the surface finally begins.

Chtholly helps out around the base as his secretary and gains the adulation of everyone there. Willem, on the other hand, starts having doubts about some unanswered questions after meeting Nopht and Rhantolk.

The situation on the surface heats up as a massive cave is found beneath Gomag City, and lying there is something very unexpected.

A desperate battle unfolds upon the Saxifraga as it tries to escape the attack of timere. Chtholly, clinging to the last pieces of emotions she still possesses, decides to fight.