{GREATEST COMPETITOR} Tsukishima x Fem!Reader

-𝐤𝐞𝐢 𝐭𝐬𝐮𝐤𝐢𝐬𝐡𝐢𝐦𝐚 𝐱 𝐟𝐞𝐦!𝐫𝐞𝐚𝐝𝐞𝐫 -the bold granddaughter of ikkei ukai and sister of keishin ukai, y/n begins her first year at karasuno high fighting with another student over grades and strength. -y/n ukai strikes a deal with her big brother that she will be karasuno's manager as long as kei...