It's looks like he has some kind of obsessive obsession to something, so when he like something too much, he wouldn't let other to touch or have them too, so he destroy it.. The boats is representative of his memory of the things that he like and destroyed.. And it's also looks like he want to take suicide after graduation.. And the friend finally know about it in the end, but because they like each other, the friend asked to bring him to his place too (or to take suicide together)
You know this manga make me remember Jpop song about suicide..
It's looks like he has some kind of obsessive obsession to something, so when he like something too much, he wouldn't let other to touch or have them too, so he destroy it..
The boats is representative of his memory of the things that he like and destroyed..
And it's also looks like he want to take suicide after graduation..
And the friend finally know about it in the end, but because they like each other, the friend asked to bring him to his place too (or to take suicide together)
You know this manga make me remember Jpop song about suicide..