"Please Twins!" is a 12-episode anime series that revolves around a comedic and heartfelt narrative centered on identity, family, and relationships. The story begins with Maiku Kamishiro, a young man living alone in a rural house, who encounters two girls, Miina Miyafuji and Karen Onodera, both claiming to be his long-lost twin sister. The twist lies in the fact that Maiku, Miina, and Karen were all born in the same hospital during a chaotic event, leading to confusion about their true familial ties. The series explores their attempts to uncover the truth while navigating their growing bond.

Miina Miyafuji is a cheerful and energetic girl who arrives at Maiku's house first, believing she is his twin due to a shared pendant. Karen Onodera, a reserved and intelligent girl, later appears with the same pendant, asserting her own claim as Maiku's twin. The trio decides to live together to piece together their past, leading to a mix of comedic misunderstandings and emotional moments. As they interact with each other and the supporting cast, including Maiku's childhood friend Kiyoura Arisaka and the mysterious Dr. Onodera, the story delves into themes of belonging and the meaning of family.

The plot balances lighthearted humor with moments of introspection, as the characters grapple with their uncertain identities and the possibility of being siblings. The series avoids definitive answers until the final episodes, maintaining tension and curiosity about the true nature of their relationship. Through its exploration of familial bonds and personal connections, "Please Twins!" presents a narrative that is both engaging and emotionally resonant, appealing to fans of slice-of-life and romantic comedy genres.