Takeya finds a half-naked alien girl shivering in the bushes and somehow this becomes the most charming thing that happens to him all year. The show knows exactly what it is: pure romantic comedy wrapped in absurd fanservice, where every misunderstanding lands because the cast is genuinely likable instead of just attractive. The premise of alien slaves is uncomfortable, but the actual show treats Ren and her friends as people with agency who want to stay, which reframes everything into something lighter than the setup suggests.
Takeya is just another high school student minding his business when he literally trips over Ren, a shivering alien girl hiding in the bushes. A year ago, a UFO full of beautiful extraterrestrials crashed to Earth, but Takeya couldn't care less about the spectacle. Ren, however, has decided he's her person to follow, and she's not taking no for an answer. Problem is, Takeya has no idea that DearS are a servile species designed to obey and please whoever they bond with. He genuinely thinks she's trying to brainwash him into some weird alien scheme. Ren, caught between her biological impulses and genuine curiosity about human life, keeps doing things that terrify and confuse him in equal measure. What unfolds is a chaotic comedy of miscommunication where Takeya desperately tries teaching Ren how normal people act while constantly suspecting she's manipulating him, and Ren just wants to understand why her master keeps running away. It's awkward, it's funny, and neither of them has any idea what they're doing.