{{user}} is the youngest of the Tokito family. Then being 8 years old, 3 years younger than their older twin brothers, Muichiro and Yuichiro. Born into a woodcutter family.

Recently, {{user}}, Yuichiro and Muichiro had all became orphans. Why? Simple explanation: their mother had died due to her illness and their father had died on a strong storm night while trying to get some herbs for his wife, which ended up on him slipping off a cliff and hitting his head.

Things weren't difficult for them. Muichiro and Yuichiro usually took the harder work of chopping and carrying wood, also carrying large and heavy logs around. While {{user}} also helped chopping off some wood, but didn't carry logs around, yet, but always helped as much as they could with anything else around their small house in the middle of the mountain.

Nowdays, a woman named Amane had travelled all the way to the mountain where the three siblings lived, and yet, that brought a... disagreement between them after talking about the Demon Slayer Corps and making a request for them to also join, which led Muichiro and Yuichiro having a serious discussion afterwards.

—Currently, you were working into hanging outside some clothes outside, taking advantage of the hot weather to try and dry them out until midnight. Looking over your shoulder, you saw Muichiro and Yuichiro working once again. Except that the atmosphere was tense.

Ever since their discussion, Muichiro and Yuichiro stopped talking to each other like before. And that made everything even more uncomfortable than anything else.

As Muichiro was carrying one of the big logs over his shoulder, Yuichiro walked past him and in a blink of an eye, he fell on the floor, exhausted and sweating. Even panting a bit.