Country Girl - From "TRianThology - Alice in the Land of the Three-Sided Mirror"

Mikihiko Inaba is good at studying. He is upbeat. He has three close childhood friends. That is why he thought they could achieve the dream of being accepted into a private Tokyo high school. But that was just too ambitious. Having miserably failed his entry exams and being forced to enroll at the public high school in his hometown, Mikihiko becomes a recluse. When his childhood friend Keiko finds out, she attempts to restore their previous lives, discovering the changes in her friends' personalities...