In a bid to deepen her bond with Kobayashi, the dragon maid Tooru concocts a potent love potion as Valentine's Day approaches. Opting to infuse her affection into homemade chocolates, Tooru's romantic gesture is thwarted when Kobayashi discerns the true nature of the gift. Undeterred by this setback, the day unfolds with promising encounters. From spirited celebrations to a soothing hot spring escapade, Kobayashi and the dragons immerse themselves in the joyous Valentine's festivities.