Nana and Park Sung Hoon start to fall deeper in love in new stills released by KBS 2TV's 'Into The Ring.' Tender moments between the leads were unveiled on August 5, per Soompi.

Nana and Park Sung Hoon are seen lingering outside in the middle of the night, in the newly released stills. The two seemed lost in the world as they looked into each other's eyes.

As they gaze sweetly, their arms wrapped around each other's waists and finally share a sweet kiss. Goo Se Ra's face glows in genuine happiness as Seo Gong Myung tightly embraces her. Viewers are starting to wonder how the 'cat-dog' relationship turned into such a romantic pairing.

In another set of stills, Goo Se Ra and Seo Gong Myung are at a mineral spring. The two heard the residents' opinions in the previous episode, opposing the change of the name of the neighborhood of Sarang, which was added to the Smart One City Project. Both became suspicious about the residents' approval and investigated the issue themselves.

Goo Se Ra and Seo Gong Myung learned that the head of the neighborhood was the one who manipulated the motion after they compared the actual residents of Sarang to those who signed the papers to change names. The pair also discovered that the late Yang Na Seong (Yoo Sung Yoo) is the one who investigated the forgery motion to change the name.

In the new teaser images, Goo Se Ra and Seo Gyung Myung pretended to work out with the exercise equipment around them while their attention is on something else. While Goo Se Ra showed looks of determination about something, Seo Gong Myung keeps a watchful eye with his hat lowered.

What exactly did they discover there? Watch the next episode of 'Into the Ring' on August 6 at 9:30 PM, KST.