Extra chapter to commemorate <i>on Blue</i>'s 10th anniversary.

After stalking one another, high school teacher Takatsu and former student Mizusawa finally start dating. Mizusawa, once a cheeky high schooler, is now a good-looking younger boyfriend to Takasu. A middle-aged man, Takasu isn’t accustomed to dating someone like Mizusawa and having his unrequited love requited. This volume is a collection of stories focusing on Takasu and Mizusawa as they date and build a life together over the years.<br>
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(Source: Manga Planet)

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