Sakakibara Rem

A "cute" JC and her "friendly" companion protect the town with "good" intentions. Or in other words, "Schoolgirl tries to protect the town in her mecha, but she ends up doing more damage and creates more work for City Hall instead."

A young artist of antropomorphic military machines slips through time and finds himself in the year 1939 on Mongolian-Manchurian border where he discovers a rather unusual fan of his work in the form of Japanese tank crew commander.