|Length||Short (2 - 10 hours)|
Ten years ago, Essi's mother died in a questionable accident. She left a USB flash drive with a locked folder called "X-note". Unable to understand the purpose of it, Essi continued living her life as a normal junior high school student. However, Essi is hardly normal, for she possesses power beyond normal human.
|Hair||Green, Waist Length+|
|Role||Orphan, Psychic, Telepath, Transfer Student|
Essi is pursuing the truth regarding her mother's questionable death. The necklace that was left by her mother before her death was actually a USB flash drive with a locked folder called "X-note". In order to find clues to unlock it, Essi went to Xen Institute upon Yuon's invitation.
|Engages in||Investigation, Teasing|
The self-proclaimed famous informant of Xen Institute, Anon offered to help Essi with her investigation.
|Personality||Friendly, Naive, Relaxed|
Essi met Oure when she was lost in the corridor. He sports a completely white outfit from top to toes that can only be matched with his favorite past times--- watching the clouds.
A student of Xen institute, Yuon was the one who invited Essi to his school in order to investigate a murder case and a mysterious disappearance. He knew about Essi's abilities and asked her to use them to find the culprit.
|Hair||Blond, Long, No Bangs, Parted in Middle, Twin Braids|
|Body||Pale, Slim, Young-adult|
|Clothes||Brooch, Cravat, Glasses, Hairpin|
Acia is one of the teachers in Xen Institute. According to Yuon, she was one of the school's founders along with Essi's mother. Due to this, Yuon assigned Essi to class 2A--- the class that Acia teaches.
|Hair||Long, Ponytail, Red, Spiky Bangs, Straight|
|Body||Pale, Teen, Young-adult|
A very suspicious man whom Elcia met in the Present. He wields a bamboo sword while giving people glares that could kill puppies, but then again he is probably harmless.