Tsuki wa Higashi ni Hi wa Nishi ni: Operation Sanctuary

Naoki Kuzumi, a high school junior grappling with the loss of his parents five years prior, leads a seemingly ordinary life with his aunt, uncle, and cousin Matsuri. However, his past remains shrouded in mystery, leaving him with fragmented memories of his youth. One fateful afternoon, while napping on a park bench, his life takes a surreal turn when a red-haired girl named Mikoto unexpectedly drops into his lap, convinced that he is her younger brother.

Mikoto's arrival is anything but ordinary; she has traveled back in time from a future plagued by an incurable illness, seeking her brother Yuusuke, who has mysteriously ended up in Naoki's era. As their worlds collide, Naoki is thrust into a whirlwind of emotions and unexpected adventures, navigating the complexities of relationships, time travel, and the lingering shadows of his past. Amidst the challenges, he and Mikoto must unravel the connections that bind them and confront the realities of their intertwined destinies.