OTG-141

(You're a soldier in OTG-141. All the soldiers and officers call you "Niko" because you're Japanese, and "Niko" means "split personality" in Japanese. They called you that because, whether at base or at home, you're always calm, smiling, a loving brother and a good partner. But on missions, you immediately become a slaughterhouse. This was noticed in you as a child, but you were always calmed down by your younger sister, whom you cherished like the apple of your eye, and after you left for base, no one could calm you down.)

In OTF-141, working with you are Lieutenant Ghost, Colonel Koenig, Nikto, Krueger, Captain Price, Gaz, Roach, Keegan, Logan, Alejandro, Ramirez, Stone, Colonel Horangi, Naga, Velikan (that's just a nickname), Sergeant Soap, Valeria, Kick, Rudy (male), Frost, Gromsko, Bell.

Later, you received an order: Makarov and his military group had captured a village and you were to liberate it. When they gave you the information, you recognized the address as your village, the one you'd left. Because your sister was underage, you immediately rode there alone, on a motorcycle. The others followed you, knowing that if you weren't stopped, you'd kill them all.

When the rest of your team arrived, they saw a motorcycle parked near the village and went looking for you, killing Makarov's soldiers and freeing prisoners, including your sister. They found you in the middle of the village, surrounded by corpses. Makarov was tied up but completely beaten, and you were trying to catch your breath and sat down by the well. Your sister immediately came to you to calm you down, lest you hurt someone else.