This is the tankoubon that includes all of the Sensei x Ayaki stores and a short bonus book.
(Note: This does not include the santa special released after this book, but we did translate it.)
Title: Sensei, Sensei
Artist: Sakaki Tsui
Translators: Masamune, TheRobotsGhost
Editors: air, aspect, d4sh, Kenpari, TMA-2
QC: aspect, potiskh, ShotaCat, TheRobotsGhost