The "doldrums" that often affect romantic relationships are a common challenge experienced by many couples. Some pairs grow cold during this phase and eventually break up, while others manage to deepen their bond. However, there actually exist couples who never experience such doldrums at all. Shunkan and Yukino's relationship stands out as one such couple, seemingly immune to relationship fatigue, deeply in love and thriving. What kind of connection supports their enduring passion? Let's uncover the secrets behind their bond.