Definitely in my top 5 of all time!
To be honest, I didn't expect it to hit me so deep. I saw the category to be comedy, drama, and I thought maybe I will get some laugh. But boy, oh boy! The hikkikomori condition of Satou-kun was unbearable at times and I couldn't help but sympathize with the characters. It was one of those anime where after finishing you start to ponder about life.
It left a hole in my heart when I finished it. I could think of nothing but this anime to the point where I couldn't focus on my test. It was that intriguing. I will recommend this to anyone and I will guarantee you won't find something quite like this.