(Volume 7)At Yanari's party, Nai and the crew deepentheir friendships and experience the warmth that comes of supporting andencouraging one another. Upon their return to the 2nd Ship, Gareki is summonedto meet with a stranger, who has come aboard disguised as a tree...?!But back atChronom? Academy, Kafka launches an attack, sending a swarm of Varuga to laysiege to the prestigious school. And when Tsubame attempts to protect herfriends...she ends up a hostage herself! With Gareki back on board the 2nd Ship,who will come to her rescue?!