Kota Sako

Kota Sako is a member of Shishitoren. He is an old friend of Toma Hiragi. After his defeat, his friendship with Hiragi was reconciled. Sako is a fairly tall young man with light brown hair that fades into darker brown at the ends, which he dyed. He originally had black hair and later chooses to return to it. He is shown to have a scowl on his face, but in his earlier years, he was always seen smiling.

He is seen as a serious person. At the starting of the series, he held a grudge against Hiragi for choosing to follow Umemiya and for telling him to choose his own way instead of following him.