Chapter 88.5

Matsuri's Birthday (祭里の誕生日, Matsuri no Tanjōbi) is a special chapter of the Ayakashi Triangle manga series. It is a special chapter to celebrate the transmission of the anime.

Characters

 * Matsuri Kazamaki
 * Suzu Kanade
 * Rochka
 * Une
 * Reo Korogi
 * Ponosuke
 * Soga Ninokuru
 * Yayoi Toba
 * Lucy Tsukioka
 * Shirogane

Summary
On August 1, Matsuri talks to Suzu on the phone, Suzu tells him that she will celebrate his birthday to which Matsuri tells her not to worry as he has a mission to which Suzu tells him to finish quickly and come back since she is making a cake.

Matsuri remembers the last time Suzu celebrated her birthday, at that moment Rochka and Une come over to give her a gift which is a rare figure of a character from Matsuri's favorite series, Matsuri thanks Rochka for the gift and at that moment the figure begins to melt much to Matsuri's sadness.

Matsuri goes to Korogi Toy shop, Reo receives him and hands him his ninja gear and tells him that she upgraded it because of his birthday, then Matsuri heads to the mission with Soga, they both find many ayakashis so Matsuri decides using Reo's update to his surprise is a sexy gear causing discomfort in Soga, the suit makes the ayakashis lose concentration so Soga and Matsuri take advantage of the moment to attack them.

At the end of the mission, Soga is nervous because he wants to wish Matsuri a happy birthday, when he manages to tell him, Matsuri has been making Soga blame himself, Matsuri arrives at Suzu's house where she is waiting for him with the cake that she mention to him, they both talk about everything they have experienced so far, Suzu mentions to Matsuri that Ritta like her parents left so they can do things alone, Suzu and Matsuri start to kissing and at that moment the phone rings to which Matsuri answers, Lucy and Yayoi tells her to go to karaoke and take Suzu to which Matsuri accepts, at which point Suzu thinks that maybe she overstepped by embedding her body in a ribbon, to which Shirogane at the window yells at her that she is shameless.

Trivia

 * This is the first chapter released in Weekly Shonen Jump after its move to Jump+.