Please Twins!

Please Twins! (おねがい☆ツインズ, Onegai Tsuinzu, Onegai ☆ Twins), is an anime television series, scripted by Yousuke Kuroda and produced by Bandai Visual, which was later adapted into a light novel and one-volume manga series. The Please Twins! anime series is a spin-off sequel to Please Teacher!. It first aired in Japan on the WOWOW satellite television network on July 15, 2003 and finished with a total of 12 episodes plus a later OVA episode released on DVD. The series was later adapted into a light novel in 2004, which spanned a total of two volumes and, soon after, into a short one-tankōbon manga version (authored by Akikan), which was serialized in MediaWorks's Dengeki Daioh magazine in September 2005.

Plot
Please Twins! is a story about three high-school students: Maiku Kamishiro, Karen Onodera, and Miina Miyafuji. The three were drawn together by a photograph of their childhood home which later makes all of them seek out the house in the picture. However, the picture shows only two children, a boy and a girl. The three conclude from this that only one of the girls, either Karen or Miina, can be related to Maiku. The other must be a nonrelative. The only other identifying feature of the pair in the picture is that the boy and the girl have eyes of the same unusual color, a feature that furthers the ambiguity as all three of them share the same eye color.

The main concern of the male lead, Maiku, is that, although he eventually comes to care for both of the girls, he does not know which of them is his sister. In addition, the two girls develop feelings for Maiku, forming a love triangle that cannot be resolved until the truth of their relationship is known. All three main characters are in the predicament of wanting to discover their past versus the risk of losing a romantic relationship.

The events of the story are set the year after Please Teacher! and characters from that series appear in supporting roles throughout Please Twins!.