Daremo Shiranai 29-nichi

Yukio resides in an apartment that is seemingly haunted by a ghost, yet the supernatural presence brings him no fear. When he finally encounters the spirit, he is entirely unsurprised to find that it takes the form of a young girl named Akari. Rather than fleeing from the haunting, Yukio embraces his unusual living situation, and despite the stark differences between the world of the living and the realm of spirits, the two gradually forge a deep connection. Their bond eventually blossoms into a romance, leading them to officially become boyfriend and girlfriend. What truly unites them, however, is a rare and extraordinary coincidence: they share the exact same birthday. Together, they begin making plans to celebrate this special occasion side by side. Because their shared birthday falls on February 29th, it is a deeply sentimental event that only arrives once every four years. For Yukio and Akari, this infrequent date transforms from a simple calendar anomaly into a cherished milestone, offering a fleeting but beautiful opportunity for a human and a ghost to honor their unique love.