Kokou no Hito is my all-time favorite manga. The tragedy of the story is so real and sympathetic that I almost wanted to stop reading, but the art, symbolism, and strength of the main character kept me reading on.

When I originally started reading Kokou no Hito, I thought it would be another high school based manga that developed slowly and would end shortly after the main character graduated, but I was proven completely wrong. This manga isn't about some fictional character who experiences and accomplishes various things in high school; it's about a human being who time after time runs into hardships and does his best to overcome them.

The art is amazing, and the author uses a lot of different imagery and symbolism to help us understand each characters personality and how they might be feeling at the moment. Later on in the manga, it becomes poetic and foreboding; it's hard to put into words the complicated emotions this manga makes me feel.

There are three things you should know before reading this:
#1: No matter how badly you want to stop reading the manga because of a sad event that happens, do not. This manga is worth reading till the end.
#2: This manga has some nudity and mature scenes.
#3: A great portion of the manga goes into developing the main character, but by the end you will feel extremely connected to him as if he were a close friend of yours in real life (well, maybe not, but that's how I felt).

I recommend you give Kokou no Hito a chance, even if you don't usually read mangas like this. I was skeptical at first, but grew to love it immensely.