Chapter 1

Matsuri, Suzu and the Ayakashi (祭里とすずと妖, Matsuri to Suzu to Ayakashi) is the 1st chapter of the Ayakashi Triangle manga series.

Characters

 * Shirogane (Debut)
 * Suzu Kanade (Debut)
 * Matsuri Kazamaki (Debut)
 * Seigen Kazamaki (Debut)

Summary
Shirogane, a 400 year old ayakashi, observes Suzu Kanade and comments how badly he wants to devour her, but Matsuri Kazamaki, a ninja exorcists from Kazamaki clan appears and captures him. Shirogane states he is the great Shirogane and demands Matsuri to release him, as he keeps annoying him, Matsuri prepares to fight him, but Suzu comes and takes Shirogane telling Matsuri to stop picking on the cute cat. Matsuri explains that he is an ayakashi and is suspicious, but Suzu tells him that all ayakashi are suspicious and that he just wanted to play and leaves with Shirogane. Matsuri gets in front of her and asks her to stop playing with ayakashi, but then sees her legs and as he touches them he wonders if they were always that thick. Suzu then kicks him in the face and Matsuri uses substitution jutsu to get away, but explains he still allowed her to kick him as otherwise she would have kicked the wooden log.

Suzu takes Shirogane wanting to release him somewhere else. She tells Shirogane that Matsuri is a childhood friend and recalls how kids made fun of her for talking with "ayakashi" that only she can see, but Matsuri was the only other person who could see them and they became good friends. But one day Matsuri decided to take over his grandpa's family business and started chasing away the ayakashi.

Elsewhere, Matsuri faces a Human-Faced Spider ayakashi and engages him in battle, realizing he was responsible for all the traffic accidents in that area. Matsuri quickly defeats it, commenting that evil ayakashi often popup and he needs to kill them before they learn about Suzu.

Suzu goes to a shrine saying that she knows there are bad ayakashi, but those around her are harmless. He comments they will soon be in high school and that things can happen between boy and girl, shocking Shirogane that she may want some romance with Matsuri. Meanwhile, Matsuri goes to his grandpa and tells him about the weak ayakashi Shirogane, but hearing its name, his grandpa tells him that Suzu is in great danger. He explains that there are ayakashi that can hide their energy and that Shirogane is master of many evil jutsu and is known as the king of ayakashi. At the same time, Shirogane was explaining to Suzu that he is powerful and is the king of ayakashi, but she doesn't care and continue to pet him. Feeling the waves of rich haku that come from her fingertips, he tells her that she is a Ayakashi Medium, a rare occurrence in humans which have over-secretion of life force. An Ayakashi Medium can rise the power of an ayakashi and in the past people were casting them away and sacrificing them as they attract ayakashi.

Matsuri recalls how his grandpa told him about Suzu being an Ayakashi Medium and how one as she grows, she will attract dangerous ayakashi. Mitsuri then decided to become a great ninja exorcists and protect her. Shirogane tells Suzu that Matsuri likely knows what she is, but he misjudged his power, making Suzu realize why he changed and that he knew a moment like this would come. Shirogane changes to his true form, but before he is able to devour her, Matsuri comes and stops him. Matsuri starts fighting Shirogane and blast him away. He takes out a scroll that his grandpa gave him, in which his grandpa had stored his power for 30 years. Matsuri uses the God-Sealing Barrier, which starts to suck Shirogane in. Seeing that the two of them will end up in love, Shirogane uses a secret art and uses a gender swap jutsu on Matsuri. The scroll wasn't able to fully seal Shirogane and he manages to get away and Matsuri notices that he had turned into a girl. Shirogane declares that he will devour Suzu and return to his original form, but at least for now they can't get romantically with each other.

Later, Suzu helps out Matsuri dress up as they prepare to go to high school together.