Happy Lesson The Final

Synopsis:

Chitose Hitotose’s life has never been more full (of "mamas"), what more could he want? But when the principal’s introduction of an "idea box" results in an older school building to be torn down for a library, Mutsuki-mama loses all focus. At a loss of how to help, the "mamas" turn to Chitose to discover the problem and what he finds is a big shock: the decrepit school building houses the memory of Mutsuki’s first love!