My Stepmom's Daughter Is My Ex (2022)

S1E10 The Former Couple Doesn't Know How to Act "Aren't You Two Acting a Little Awkward?"

Yume and Mizuto are navigating their first summer as stepsiblings when a typhoon strands their parents, leaving them alone at home. Tension mounts when Yume discovers an unsettling insect in her room. On a different occasion, Mizuto joins Yume on a shopping trip for a swimsuit ahead of their family getaway to the countryside. These moments lead them to reflect on their shared history more frequently, sparking a mix of nostalgia and awkwardness in their newfound relationship.