This manga tore my still-beating heart out of my chest, stomped on it and burned the remnants to ashes. 
 It's so incredibly beautiful. A true work of art. It dealt with the issue of teenage depression and suicide in such a delicate and cautious manner. I don't think I've ever read a story/novel that dealt with this issue so well before. Kakeru has a wonderful support system in the form of his friends. 
 And Suwa.... you beautiful, beautiful man. Incredibly strong character to be willing to give up his future family for a friend. What a lovely person. 
 One of the elements I appreciated most in the story was how saving Kareku was a slow gradual process with many setbacks. Depression isn't cured by one act of kindness or happiness, it is a monster that needs to be constantly kept at bay. Often the characters would do something wonderful for their friend that would alleviate the darkness but would find him regressing the next day into that pit again. That is something I profoundly appreciated because that's how it truly is with depression. (view spoiler)[ Ultimately, the choice to live was Kareku, when he became aware of how his suicide would impact others and was 'afraid' to lose his life, for the very first time. The choice to live IS your own to make and no one person or event will magically change someone's mind. I really loved that that was addressed. Also, at the very end, Naho comments on how fighting off the 'sadness' will be an everyday struggle, which is very true. Very delicate handling of the issue. Truly appreciated. (hide spoiler)] 
 My only criticism stems from the fact that, despite the noble intentions of his friends, suicide is a medical disorder that can't just be brushed aside with 'good memories' or encouragement. Treating this conditions requires professionals and medication, which goes beyond the scope of what teenagers can accomplish. It's not really their fault. This is just something that goes way beyond what they can offer. And I had to suspend my need for realism in order to enjoy this story. 
 Despite that, it IS a wonderful story and it has made me cry so much, I can't even tell you. It will definitely stay with me forever. 
 5 glowing stars.