Mui

Mui is a young Vietnamese girl who becomes Riku's friend when they meet in Vietnam during Saya's investigation there.

Appearance
Mui has tanned complexion and brown hair tied in two side ponytails. She lost a leg to an exploded bomb and uses support to walk. She wears a cheerful smile with a friendly air.

Plot
Riku gets acquainted with Mui when Saya goes to Vietnam to investigate about the Phantom for leads to Delta-67 project. Riku and Kai go back to Mui’s orphanage-type home with the other kids and stay there for the night. They learn that a certain pharmaceutical company is supporting the home, and that Mui is even getting medicine regularly from a man in a suit.

Later Riku finds Mui on the streets looking at a metal detector, which she wants to buy. Riku buys it for her, and gives her the money in his pocket before sending her off in a taxi towards her home. In the end though, Kai and Riku chase after her after Riku learns that the metal detector is used to find land mines. Luckily, they find her safe and sound in her village.

The two stay there for the night, but Riku and Mui hears a certain sound. When they go outside to investigate, they’re kidnapped by a group of men led by the man from the pharmaceutical company. Kai, who was captured along with Riku and Mui, escapes from their prison and frees his brother. But with the container of Diva open, the boys are surrounded by a bunch of red-hooded children who are attracted to her singing. Saya arrives the scene and Riku is comforting a scared Mui, who is developing cracks in her skin. Kai finds them, but after seeing Mui, he pushes her away. Riku protects her and claims there’s nothing wrong with her. Mui and the other children seem to have transformed into Chiropterans and hold the two boys down, ready to eat them. They pause when Saya gets up. In the aftermath, Mui and the other children are put in cages, and the group is hopeful that they can return them to their previous form.

Skills
Mui can play the piano. She was going to a music conservatory in France courtesy of the pharmaceutical company, but she has abandoned the idea because of her family.