|Japanese Name: 小村レイ|
|Romaji: Komura Rei|
|Date of Birth: July 16th 1997|
|Age: 15 (16)|
|Japanese VA: Namikawa Daisuke|
|English VA: Yuri Lowenthal|
Rei Komura is a protagonist of the series and is a Guardian he is a descendant of the nine tailed fox. He is a first-year student at Seinaru Private School. He is Shun's best friend.
Rei is a distant relative of Yuuichi Komura and is the next Guardian to fill the role of the nine-tailed fox. He is best friends with Atori Shun and they have known each other since they were in elementary school. Furthermore he is childhood friends with Saya & Shinogu and considers Shinogu as a big brother. Rei is the only son of Kei and Mana Komura who haven't appeared in the game.
Rei is an outgoing person and is extremely friendly to others and he has little sense of social boundary he is a member of the school track team. He is a second-year student and quickly befriends Saya and easily accepts that she is the Tamayori Princess. He and Shun are best friends however are complete opposites as Shun is more shy than him. Rei is also quite mischevious and also likes to play practical jokes he doesn't excel very well at school so he gets tutored by Shun. Rei tends to take advantage of his powers and uses his genjitsu to skip school, peep in the girl changing room etc.
In Rei's route in the game Saya learns that Rei has a surprisingly serious and compassionate side which he hides from others but opens up to the protagonist (Saya) and finds his reason to exist his reason is Saya and kisses her. At the aquarium he wants to find a fish that reminds him of his friends then Saya says when they are looking at jellyfish he reminds her of a jellyfish and then he becomes determined to find something for Saya and finally finds a penguin.
Rei is a young man of average height and has short orange hair and matching eyes he wears the Seinaru Private School uniform with a twist he wears a green jacket underneath the blazer and a purple t-shirt underneath the jacket. Rei also wears an earring on his left ear as well. Rei's casual clothes consist of a turqoise open neck shirt with a red zip up jumper and a white sports jacket with black stripes he wears a pair of navy jeans and to conclude a pair of white sneakers with orange shoe laces.