after 5 years of dating, kei decides to propose to his high school sweetheart, y/n. however, nothing's easy for a tsundere boyfriend. 𝐂𝐎𝐌𝐏𝐋𝐄𝐓𝐄𝐃 #4 - haikyuu #1 - haikyuxreader #1 - tsukishimaxreader