"Momentary Lily" is a 12-episode anime series that blends elements of drama, romance, and supernatural intrigue. The story centers on Haruto Aizawa, a reserved high school student who discovers a mysterious flower called the Momentary Lily, said to grant a single wish to whoever finds it. However, the flower comes with a cryptic warning: the wish will only last for seven days, after which the consequences of the wish will unravel in unpredictable ways. Haruto, initially skeptical, decides to test the flower’s power by wishing to reconnect with his estranged childhood friend, Sora Nakamura, who abruptly moved away years ago.

As Haruto’s wish takes effect, Sora reappears in his life, seemingly unchanged from their childhood days. However, it becomes apparent that Sora’s return is tied to the flower’s supernatural influence, as her memories of the intervening years are fragmented and inconsistent. The series delves into the complexities of their rekindled friendship, exploring themes of loss, regret, and the passage of time. Haruto begins to notice subtle changes in Sora’s behavior, hinting at a deeper connection between her and the Momentary Lily.

Parallel to Haruto and Sora’s story, the series introduces a secondary narrative involving a group of individuals who have also encountered the Momentary Lily. Each character’s wish reveals their personal struggles and desires, ranging from unrequited love to unresolved guilt. These interconnected stories highlight the flower’s dual nature as both a source of hope and a catalyst for unintended consequences. As the seven-day deadline approaches, Haruto must confront the reality of his wish and decide whether to embrace the fleeting happiness it brings or let go of the past entirely.

The main characters include Haruto Aizawa, whose introspective nature drives much of the narrative; Sora Nakamura, whose enigmatic presence serves as the emotional core of the story; and Rina Takahashi, a classmate who becomes entangled in Haruto’s journey while grappling with her own unspoken feelings. The series balances its supernatural premise with grounded character development, emphasizing the emotional weight of each decision and its ripple effects on the characters’ lives. The plot unfolds with a steady pace, gradually revealing the true nature of the Momentary Lily and its ties to a larger, otherworldly phenomenon.