Mapledori

MidoMaple is the het ship between Sou Hiyori and Maple from the Your Turn To Die fandom.

Canon
Chapter 3, Part One (A)

When Sou is mentioned by Ranmaru and Sara in the discussion room, Maple appears very happy and starts repeating his name over and over.

Chapter 3, Part One (B)

In order to get Sou's ID card, Shin's A.I tells the group that they have to retrieve it from Maple, who Sou had previously given it to as a way to pacify her. Upon returning to the discussion room, Maple tells Ranmaru and Sara that she is in love with Sou, but he doesn't love her 'yet'. She says she wants to be a Floormaster along with Sou so that they can be together. She had also received a supposed love letter from him, although it was simply instructions for Sara and the rest of the group on how to defeat her. When either Ranmaru or Sara steals Sou's ID card from Maple's back, Maple becomes very angry and demands for them to give it back to her. After blowing a hole in Kurumada's stomach, She goes on a rampage before exhausting her energy and passing out in the Art Gallery.

Later, Maple is missing from where she was passed out, and is found being dragged by Sou to the Operating Room. He claims he's going to fix her with 'the power of his love'. Alice or Reko (Depending on who survived in Chapter Two) say they won't let him, and Sou says they should kill him if they want to stop him, but he doesn't think anyone but Maple would be able to do that.

During Keiji's point of view, Maple tells him, Q-Taro and Mai that she was originally supposed to kill Sou. However, to stop her from doing so, he re-configured her to fall in love with him. She says the emotions she felt as a result of this made her very happy, but she also wants to be free of her programming so that she can stand up to Sou.

After being 'repaired' by Sou, Maple looks much different, having the A.Is of Rio Ranger, Mishima, and Shin attached to her. She is told by Sou to attack the group, despite not wanting to. When all of Maple's energy is exhausted, she attempts to kill Sou along with herself so that they can die together. However, Sou claims that he loves her, and Maple hesitates, despite knowing that he's lying. After Sou says he isn't lying and that he apparently always loved her, Maple says she won't believe him, before her body explodes. It is clear that Sou was only claiming to love Maple out of fear of death.

Fanon
The ship started after Chapter 3, Part One A, because some fans believed Maple might have a crush on Sou, due to her seeming happy when he's mentioned. After Chapter 3, Part One B, most fans abandoned the ship due to it's unhealthy nature.