Jisei (video game series)

Jisei: The First Case
Cover art depicting series protagonist "Kangai"
Developer(s)	sakevisual
Publisher(s)	sakevisual
Writer(s)	Ayu Sakata
Series	Green Tea Line Jisei series
Engine	Ren'Py
Platform(s)	Microsoft Windows, Mac OS X, Linux
Release	June 4, 2010
Genre(s)	visual novel
Mode(s)	Single-player

Kansei: The Second Turn
Cover art depicting detective Mikolaj Gurski
Developer(s)	sakevisual
Publisher(s)	sakevisual
Writer(s)	Ayu Sakata
Series	Green Tea Line Jisei series
Engine	Ren'Py
Platform(s)	Microsoft Windows, Mac OS X, Linux
Release	July 11, 2011
Genre(s)	visual novel
Mode(s)	Single-player

Yousei: The Third Investigation
Cover art depicting Aki (left) and Naoki Mizutani
Developer(s)	sakevisual
Publisher(s)	sakevisual
Writer(s)	Ayu Sakata
Series	Green Tea Line Jisei series
Engine	Ren'Py
Platform(s)	Microsoft Windows, Mac OS X, Linux
Release	February 1, 2013
Genre(s)	visual novel
Mode(s)	Single-player

The Jisei series is a visual novel series created by sakevisual for the Microsoft Windows, Mac OS X and Linux platforms.

Each game in the Jisei series plays out as a mystery novel, with the player examine their current location to find clues. The player also can talk to people and get hints. The player can access an in-game notebook to keep track of all clues and hints found so far. As of Yousei, the player can use Kangai's phone to send and receive messages from other characters, serving as a hint system.

Set in the fictional town of Edgewater, the Jisei series follows the protagonist: an unidentified American teenager who later takes the codename "Kangai". Kangai has a strange psychic ability: he can relive the dying moments of any dead body he touches, as well as sense when someone nearby has died. Shortly after he returns to his homeown in Edgewater, Kangai meets three other people who are part of a government agency: Aki Mizutani, the group's brash and impulsive leader; Naoki Mizutani, Aki's younger twin brother and the group's voice of reason; and Li Mei, a quiet girl with an unsettling aura around her. Kangai learns that all four have similar psychic abilities, called kansei—Aki can speak directly into anyone's mind, using it to either talk to another kansei without speaking or persuading "normal" people subconsciously; Naoki can remember anything he has experienced, making him useful for undercover work; and Li Mei can sense the emotions of those around her, so much that she has to sort out which emotions are hers and which aren't. They are part of a government agency under supervision of Mikolaj Gurski, a police detective.

When Jisei begins, the protagonist wakes from a nap inside the café, and suddenly feels ill. Heading to the restroom, he discovers a dead woman on the floor, with a knife in her chest. He touches the woman to experience her final moments; he finds out that someone had suffocated the woman. When the protagonist comes to, he finds Jennifer Bergstrom watching him, claiming him as the murderer. Detective Gurski, who happened to be at the café coincidentally, decides to question everyone present—Chance Jackson, Jennifer Bergstrom, Kizaki Suitani and the protagonist.

Determined to prove his innocence, the protagonist questions the suspects present and examines the café. He discovers used duct tape in the trash in the men's restroom. After collecting all clues, the protagonist converses with Gurski about it and identifies the culprit. It turns out that the culprit is Jennifer Bergstrom, and that the victim is Sara Blackmoore. Both women were employees for Biodev Imaging, and Sara had stolen research from Auten Engineering, Biodev's competitors, for Bergstrom. However, Sara decided to double cross her employer in favor of a third party that offered her more money. When the protagonist, Gurski, and Kizaki confront Bergstrom, she tries to run; the others manage to trap her, however, and she confesses. Detective Gurski snaps a pair of handcuffs on her wrists and leads her outside. Kizaki, who says his real name is Naoki, wants the protagonist to help him finding out who the third party Sara mentioned is. Later, Naoki's twin sister, Aki, shows up personally and offers the protagonist to work with them. However, she makes clear that he needs their help more than they need his.