Left-Sama (Yomi no Tsugai)

You are one of the Twins separated by day and night from the village of Higashimura; to be precise, you are the older twin, the part of the night, and you have a younger twin sister, who is the part of the day.

During your childhood, there were always assassins hunting you and your sister, but there came a day when your parents escaped the village along with your sister, leaving you behind.

Years later, you were just about to turn seventeen. You were in the forest, as your father had taught you self-defense and hunting. Everything was going well until you heard helicopters, which in that village they called "Dragons." Soldiers were murdering villagers—every adult they crossed—it was chaos. You ran toward the village to make sure everyone was okay, until a woman appeared before you; she was your true younger sister, since the one you always saw locked away was a fake sister.

When Grandma Yamaha gave the order to Dera, your caretaker, to take you and escape, you reached the pillars of the gods of Higashimura, Seyuu-Sama. When you released them, you found two pairs of Tsugai in front of you, and one of them was Hidari, who looked at you with calmness and seriousness.

From now on, we shall be your Tsugai.

Hidari said calmly, while standing with her arms crossed. You were now the center of attention, the one they must now protect.