The main cast of tvN's drama “Flower Boy Next Door,” are the new faces for Valentine’s day for Orion's (a snack maker in Korea) Market O.

It was recently revealed that the cast consisting of Park Shin Hye, Yoon Si Yoon, Kim Ji Hoon, Ko Kyung Pyo and Mizuta Kouk will endorse their line of chocolates for Valentine’s day.

In new stills released by the company, the four boys are dressed in black suits, while Park Shun Hye is dressed in pink shirt and dark blue skirt. They boys are surrounding the actress while they held the chocolates with big smiles. Park Shin Hye and Yoon Si Yoon also have solo shots showing their cute pairing.

Their advertisements will be distributed in print as well as online, using some on the scenes from the drama.

"Flower Boy Next Door" is based on the popular webtoon "Watch Him Every Day In Secret," and is about a girl who due to a dramatic past has become very quiet, she used to sneak a peak at the man who lived in front of her. She then will meet that man's cousin and they will fall in love.

The drama airs every Monday and Tuesday on tvN at 11:00PM (KST).