Though he's carried around his brother's bat, Naota has never hit anything. Now his brother's gone, it's Naota's turn to prove his worth. The baseball team doesn't seem to be doing so well. What is Haruko doing playing for the other team?

The end is near with both Haruko and Canti at large. Medical Mechanica is preparing to move. Before Amarao can do anything to stop it, he needs to find the terminal core. Mamimi has found new friends with an appetite for the mechanical.