鷺森 灼

Arata is a a second-year at Achiga Girls' Academy and the last member to join the club. She is a huge fan of Harue Akado: when she was little she used to play mahjong with the Matsumi sisters but stopped playing all together when Harue quit and joined Achiga's mahjong club (though she claimed she was only there as a filler member) after hearing Harue had started playing mahjong again.

She has a cool type personality and has a strong admiration of Harue Akado. Though at first she stops playing mahjong because of Akado's loss in the semi-final match of the national tournament and quit the team afterwards on. But later she starts playing again when Harue becomes the coach of the Achiga team. According to Harue, she is a reliable person, so much so that she is named president of the newly reformed mahjong club.

Arata prefers pinzu waits and they resemble what might be left after the first roll in bowling. For example, similar to a bowling move called The Greek Church or Big Five her hand includes 5-5-5-6-7-8-9 pin the wait being on the 4,6,7,9 pin (as there is no 10 in mahjong). She also gets a wait that is similar to what's called a washout, her hand includes the 2-3-3-3 pin with the wait being on the 1, 2, and 4 pin. However, any bowling formation that has a name to it (such as dime store or Cincinnati) she can make a wait with.