Hotaru no Hikariホタルノヒカリ (Japanese); 小莹的青春 (Chinese); 호타루의 빛 (Korean); Glow of the Fireflies; Hotaru no Hikaru; It Is the Only Little Light in My Life; Light of the Firefly; Hotaru's Light (English)

27-year-old Hotaru would rather sleep at home than seek romance, but due to unforeseen circumstances, suddenly she’s living with her boss, Takano. What’s more is that she now has a budding relationship with Makoto, who’s younger than she is. Like a dried fish thrown back into the ocean, can she learn to swim again and rediscover the ways of romance?