The headline introduces the thematic similarities between two current Japanese winter dramas, specifically focusing on the themes of reunion and the past. Evidently, the two productions have integrated culture-specific narratives highlighting the revival of old bonds and the nostalgia associated with the past. Both dramas are gaining popularity for their heart-tugging narration and compelling storytelling, casting a wave of reminiscence across the nation.

In Japan, dramas traditionally emphasize on familial bonds, friendships, and elements of nostalgia. The audience often find themselves emotionally invested in the characters' lives. In this case, the storylines concerning reunion and the past resonate with Japanese societal values that cherish long-standing relationships and respect for the past.

In the US or EU, dramas with themes of reunion or past memories are also quite popular but they sit alongside a larger variety of genres. The stories often incorporate more complex plot lines and character developments, and viewers may value more on personal growth or social issues represented in the dramas.