Tarma, whose father was a decorated soldier, immediately entered the Officers Academy of Special Tactics and Battle upon his graduation from junior high. He was assigned to PF Squad after rescuing the President when at the age of twenty. Here he met and befriended his best friend, Marco. In the Great War, he found out Marco was selected for the counter offensive against Morden and volunteered for the operation. 

He fought alongside Marco through until the end of this fearsome battle, rising through the ranks with Marco to reach captain. Taking part in the suppression of the second coup, he saved Marco's bacon and made a name for himself. Second Mission completed, Tarma, following Marco's lead, chose to resign his commission, and similarly stayed on with his compadre after Marco "reconsidered" his resignation. In private, the tightly wound Marco frequently lets loose, but as a warrior, he receives the highest respect. 

Tarma's hobby is customizing motorcycles, at which he outshines the best of them. After First Mission against the dreaded Morden, he planned to go into the bike business, but put his plans on hold after suffering the desperate pleas of his spineless boss.