A tiny robot girl shows up at your door and suddenly your apartment becomes a minefield of accidental perversion. The first half is genuinely scattered, but once the show stops apologizing for itself, it finds real stakes buried under the moe, and May's arc from programmed companion to something almost human hits different than it has any right to. By the end, you're invested in whether Kazuya can keep her, not just ogling the size gimmick.
Kazuya Saotome is a computer whiz whose friend Nanbara threatens him with a computer virus. While trying to stop it, Kazuya ends up placing a special order, and minutes later May turns up at his door. She is a cyberdoll only one sixth the size of a normal person, which leads to plenty of awkward moments. Kazuya also cannot afford to keep her. The company Cyberdyne is unhappy about his missed payments and will go to any length to get CBD May back. The result is a sci-fi romantic comedy with ecchi touches.