Sometime after the events of Acceleration of Suguri, something begins to move around a piece of the spaceship that fell to the Earth in SUGURI.
arrives at a site where someone was seen to be flying in the sky. Iru talks to herself, she accepted the request to search the sky but did not think it through seriously, considering she is not really that great at finding things, she is more of a combat person. Her skills will go rusty if not practiced on for a while, Iru wants to fight something. appears before Iru and accepts Iru request for a fight. Iru asks who Alte is, and Alte introduces herself. Iru wants to fight but she can't fight some stranger she just met, Alte responds by allowing Iru to fight her because Alte has a reason to fight Iru. Iru guesses she should just take the offer, since Alte is eager to fight, and tells Alte she won't go easy on her. Alte will not go easy on Iru either.
After beating all the reproductions of those who foughtduring the war, Iru arrives at the site of the piece of the spaceship, and wonders why she has to keep fighting all these people but she is happy after getting a chance to fight after a long time. Iru also wonders who she is going to run into next. shows up, stating that her target is Iru. Iru thinks Nath looks very cool, with how her shoulders are replaced with heavy armory. Nath has never been told something like this before, as Iru continues to be amazed by Nath. Nath tells Iru that all this praise is going to make it harder to fight Iru. Iru wants to fight Nath to see what her weapons are like, and Nath agrees to a fight.
After beating Nath, Iru enters the spaceship a recognizes it. Sumika shows up and welcomes Iru, introducing herself. Iru recalls that the ship's name is Sumika. Sumika is mad that everyone abandoned the ship and had fun, leaving Sumika alone. Iru thinks Sumika is a ghost of the ship, and Sumika responds by saying Iru's brain is cute as before. Iru does not understand what Sumika is saying with her brain being cute and asks if Sumika is going to fight her and Sumika says she is on a far higher level than everyone Iru just fought. Iru says she won't lose to a ghost and Sumika replies by saying she is not a ghost, then the two fight.
After beating Sumika, Iru thanks Sumika for such a great workout. Sumika is disappointed that her hatred is just bouncing off Iru's head. Iru is now hungry and so she is going to go home now. Sumika feels sad, however Iru asks Sumika to go home together. Iru reasons that since Sumika is the ship, she is practically family. Iru asks her to go home together again, sayingwas in a good mood and must have prepared some treats. Iru apologizes to Sumika for leaving her alone all this time. Iru wants Sumika to eat a lot and be happy and to rest in peace, still thinking Sumika is a ghost. Sumika screams that she is not a ghost.