Haru no Yuki wa Tokenai

Yuki Haruno is back in her hometown after finally getting her coveted teaching license... only to be met with the somber news that the teacher she had always had feelings for, Mr. Tsuda, just died in a car crash. Struggling through emotions like deep regret and sorrow... she wanders aimlessly, not knowing what to do with her life now. Meanwhile, time has frozen for Mr. Tsuda's son, Ritsu, as well... as the grief of losing his only living immediate family washes unforgivingly over him. Things start changing when the two meet, but little do they know what fate has in store for them...

(Source: Renta!)