Kupu matua Bishoujo

Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he finds himself transported to another world. As he's lost and confused in a new world where he doesn't even know left from right, the only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she's looking for.

The Angel Brigade, an elite branch of the Transbaal Empire military, are assigned to search for The Lost Technology, mysterious items from the past that hold unknown powers. Led by the soon-to-retire Colonel Volcott O' Huey, the Angel Brigade travel to different planets using their specially designed Emblem Frame ships to search for Lost Technology. Unfortunately, they often mess up somehow and end up getting into all kinds of awkward and troublesome situations.

Yuichi hasn’t seen his cousin Nayuki in years. Now that he’s back, all knowledge of ever visiting has vanished. He tries to adjust to the vaguely familiar surroundings, but the gaps in his memory haunt him as time grows short. The pieces of the puzzle have appeared – an eerily silent beauty with blazing tresses, the mysterious girl with the winged backpack, and the sword-wielding demon slayer – but it’s up to Yuichi to discover how they fit together.

Yukito Kunisaki is on a journey in search of the Winged Maiden who was bound to the sky centuries ago after hearing the old childhood tale from his mother. As Yukito shows his puppet show to people in an attempt to make some money, he finds himself in a small town in which he did not expect to stay very long. However, when he meets an unusual girl named Misuzu, things take a drastic turn as he is invited to stay with her.

Hakushaku to Yōsei is a series of light novels written by Mizue Tani and published in Japan by Shueisha. The story is serialized in Cobalt magazine and illustrated by Asako Takaboshi. Shueisha has commercially released two drama CDs and a manga adaptation has begun serialization in The Margaret since the September issue in 2008. An anime adaptation was broadcast from September to December 2008. A visual novel for the PlayStation 2 was released on April 30, 2009.

Nodoka Haramura's appearance on television playing in a high school mahjong tournament inspires her old Jr. high school friends to reform their schools club so they can meet and play her in the National High School Mahjong Tournament.