tvN’s Wednesday–Thursday drama Our Universe has unveiled new stills previewing heightened tension in its upcoming episode. The latest development suggests that Park Seo Ham’s unexpected arrival may put the delicate living arrangement between the main characters at risk.

The romance series follows Sun Tae Hyung (Bae In Hyuk) and Woo Hyun Jin (Roh Jeong Eui), two in-laws burdened by misunderstandings who unexpectedly end up raising their nephew together. Sharing a home forces them to confront unresolved emotions while gradually building trust—and perhaps something more.
In the previous episode, subtle but noticeable tension began to surface as the two grew increasingly aware of each other. Meanwhile, the reappearance of Woo Hyun Jin’s former crush, Park Yoon Seong (Park Seo Ham), added a new emotional layer to the narrative.
The episode concluded with a dramatic reveal: Park Yoon Seong paid a surprise visit to Woo Joo’s home, disclosing that he is the landlord. Newly released images show Woo Hyun Jin and Park Yoon Seong exchanging startled glances upon coming face-to-face. At the same time, Sun Tae Hyung and Woo Joo are seen hiding behind a slightly open door, secretly observing the situation. The tension escalates when Woo Joo suddenly rushes out of the room, leaving Park Yoon Seong stunned, while Sun Tae Hyung awkwardly collapses in front of him.

According to the production team, Episode 5 will explore Sun Tae Hyung’s emotional response after feeling hurt by Woo Hyun Jin’s attempt to conceal both him and Woo Joo from her first love. His mixture of jealousy and wounded pride is expected to bring new depth to the evolving relationship.
As hidden feelings begin to surface and romantic tensions intensify, viewers are left wondering whether the secret cohabitation will be exposed—and how Park Yoon Seong’s presence will reshape the dynamic between the three characters. The next episode airs on February 18 at 10:30 p.m. KST.