Maybe that one:
http://www.mangago.zone/read-manga/last_portrait/
Unfortunately, it's not ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄ it was a manga with light atmosphere and I think it was a oneshot (in a manga full of oneshots) but thank you for the recommendation (⌒▽⌒)
Hmm... One last try:
http://www.mangago.zone/read-manga/dame_na_yatsu_hodo_kawaii/ oneshot ch.3
Otherwise, hopefully you'll find it there (?)
http://www.mangago.zone/tag/brother%20in%20law/
YAAAAAAY YOU DID ITTT!!! THANK YOU SOOO MUCH FOR THE HELP (づ￣ ³￣)づ
Yay! I'm glad :))
First is about about a guy running away and he met someone along the way. It turned out that the person he met (and fell in love with) was the arranged fiance of his sister. I think this was a light read with a comedic humor with it.