Based on the erotic game by Lilim Darkness. 
 
"Akane, I love you..." 
"......I-I...love you too, Asato......" 
 
Our relationship started after that.
After going out for 4 years and graduating from the university, we decided to live under the same roof.
I found a job at a publishing house. Akane enrolled at a vocational school as a step to realize her dream. 
 
"My drawing with Asato's writing, let's make a book together. That's my dream." 
 
Akane's smile, my most precious treasure. The thing I don't want to lose the most.
No matter how busy we become we trust each other. We love each other. 
 
I always thought these days would last forever.
So, until that guy came... 
 
(Source: Visual Novel Database)

Triangle BLUE