|Japanese name:||荒川 憩|
|School:||Sangamaki High School|
|Grade:||Second-year high school|
|Debut:||Saki Achiga-hen, Chapter 7|
|Voiced by:||Marie Miyake|
Kei Arakawa is a second year member of the Sangamaki mahjong club in North Oosaka. She was last years individual tournament runner up after Teru Miyanaga . Kei also appears at the end of the Saki Anime as one of the strong opponents in the national individual tournament. It was stated that she is one of the few people that can put up a good fight against Shiratodai.
Kei is always seen wearing her nurse outfit. She has brown hair matching with her brown eyes.
She is very friendly and was the only one who accepted to help Achiga when they called. She constantly seen smiling.
Playing Style / Abilities
Not fully shown. In Achiga and Zenkoku-hen games, she gets an exponentially good chance to get high-scoring hands if she doesn't win for a few turns. She is the individual tournament runner up which indicates that she is indeed a national class monster.
All of the Achiga Girls mahjong members were not able to defeat her during a friendly match between their schools. However her school ended up losing the match, despite her strength.
Final Eight Arc
Kei appears to help the Achiga mahjong club get stronger in order to prepare for their semi-finals match. She was the only one to answer their call to play and ended up calling some of her friends from the individual tournament to help out. At halftime of the side B quarterfinals, she asks the Achiga girls if they are okay not watching the matches and says that there are others who might want to see their match. After Rise says that its alright, Kei says that its fine but there is a tv in the lobby just in case.
She appears in a flashback of Satoha Tsujigaito when they played each other from the Inter High Individuals last year.