Even if Aki officially goes out with Sarah, the two are rather open so Aki sometimes go out with this bunny beefcake. He's a nice guy, pretty sporty yet he definitely likes his boss' softer physique.
However, something weird happened once Sarah set-up a date with him...
The deception didn't last for long: the two girls learned that Duncan actually had a twin, Dunken! And they decided to have fun with it. There was no hard feelings, and Sarah wholeheartedly kept on dating the doughier brother while Aki kept the buff one. And of course, double date shenanigans ensue~
They nickname them Dan (Duncan, buff) and Ken (Dunken, fat) to make it easier on themselves.