The name of the novel is Ai no Kusabi, there's a anime about the novel, between the 1992 and 2012 versions, I personally love the 1992 version! You can watch it on YT and be ready for a huge crying session 
The name of the novel is Ai no Kusabi, there's a anime about the novel, between the 1992 and 2012 versions, I personally love the 1992 version! You can watch it on YT and be ready for a huge crying session