The main character of Gasaraki is a quiet, withdrawn teenage boy who is viewed as a tool through which his elder brothers in the Gowa family seek to further their goals. He is a member of a special JSDF unit charged with testing the TA system. As a test pilot, he is found to possess the ability to synchronize to an extraordinary degree with the TA hardware, and in particular with the Mile One synthetic muscle tissue (a process described as a "Mental Burst"). At the behest of his family, he is also a performer of a fictional, mystical form of Noh theatre, the dance of Gasara, through which he is able to open dimensional gateways.