A kid finds a girl in a cocoon and suddenly he's fighting monsters he doesn't understand with powers he doesn't have. The show treats this like a real romance buried under apocalypse instead of sci-fi spectacle dressed up as one. Takeru stays awkward and uncertain even when he's transforming, which means every victory feels like luck rather than destiny. The comedy never stops, even during the monster fights, the show remembers that watching a high school boy panic around a naked alien girl is funnier than it has any right to be. It collapses under its own ambition by episode ten, trying to answer questions it should have left alone. What saves it is that Takeru and Hikari's confusion feels real enough that you believe it anyway.
Takeru's mundane life as a high school bike courier shatters when a bizarre light sends him crashing into the forest. There he discovers Hikari, a girl emerging from a luminescent cocoon with no memories and no clothes, speaking in innocent wonder about everything around her. Before Takeru can process what's happening, a grotesque creature attacks, and both he and Hikari transform into something otherworldly to fight back. Now bound together by this inexplicable connection, Takeru finds himself caught between two worlds: protecting Hikari as she learns what it means to be human, and uncovering the truth behind her arrival and the monsters that keep hunting them. The show balances comedy from Hikari's childlike confusion about everyday life with genuine tension as Takeru grapples with responsibility he never asked for. Romantic feelings complicate matters further when Takeru's classmate Akari enters the picture, creating an unexpected love triangle. It's a quirky sci-fi romance that asks what happens when an ordinary guy meets something extraordinary and has to decide what she means to him.