This is a song from the anime Tokyo Ghoul √A.
Title: Kisetsu wa Tsugitsugi Shindeiku (Seasons Die One After Another)
Released: February 18, 2015
This song was used as the ending theme song for Tokyo Ghoul √A.
It’s a song that makes me reminds all the feels I felt on the anime. Hide. 😥
You might wanna check it out. Don’t forget to buy the original! 😉