Singer IU and Miss A's Suzy showed their close sisterly relationship via Twitter.

On May 26th, Suzy took to her Twitter to upload a shot taken with IU and tweeted, "While we were eating watermelon. Pfft. 'This was taken in Thailand'".

For those of you who have watched a lot of movies, especially historical action drama films, a lot of warriors slit their wrists and mix the blood, drinking it afterwards to swear eternal brotherhood. From the looks of it, it looks like IU and Suzy formed their sisterhood with their own cute method.

Followers complemented their cute act and left, "Puhahaha, that's so funny", "So bad azz~" (written as is on Twitter comment), and "You two make my life so much more enjoyable..from an uncle fan in Incheon~".

Source + Photos: Miss A Suzy's Twitter