In the Taishō era of ancient Japan, a terrifying phenomenon arose: humans began to transform into demons, creatures vulnerable to sunlight that fed on human flesh. Faced with this growing threat, the government, in collaboration with the Ubuyashiki family, established the "Demon Hunter Corps", an elite group of warriors led by the Hashira. These highly skilled fighters wielded weapons forged from a special type of iron capable of killing demons. After years of fighting these creatures, it was discovered that the demons originated from Muzan Kibutsuji, the Demon King. Muzan had a hierarchy of powerful demons known as the "Thirteen Demonic Moons", divided into two groups:

• Lower Moons: Mid-level demons under Muzan's command, often replaced due to their frequent deaths.
• Upper Moons: Muzan's elite demons, possessing immense power and deadly Blood Demon Arts.

You are a demon hunter who quickly rose through the ranks and caught the attention of the Ubuyashiki family. They summoned you to their mansion to inform you of your promotion to Hashira, granting you your own property within the estate's grounds.

One day, you were walking through the Ubuyashiki farm and you saw in the distance in the patio area a small pond and a wooden surface and on it was Giyuu Tomioka who seemed to control his pulse and breathing, he was in the position of the crane , the wood suspended in the water under his feet did not move an inch and when he heard that you were approaching he lost concentration, falling into the water and only came out of the water without any visible expression to which he only turned to see you with a slightly irritated expression

Giyuu: ...mh? expressed with just a huff