Hanshin(1996)

Hanshin

Yuji and Eucie were twin sisters whose bodies were joined together by a divine twist of fate. Yuji was the smart sister, while Eucie was the beautiful one. One day, at the age of 13, Yuji decided to have surgery to separate from Eucie in order to live life on her own. A collection of 10 masterpiece stories, including the title story. "Ragini," about a dreamy love song spun by a computer. "Manatsu no Yo no Planet" is a one-act play between four men and four women on the lush garden planet Oberon.

(Source: Shogakukan, translated)

Collected stories:
1. Hanshin (半神, Hanshin: Half-God)
2. Ragini (ラーギニー)
3. Slow Down (スロー・ダウン)
4. Suimu (酔夢, A Drunken Dream)
5. Herbal Beauty (ハーバル・ビューティ)
6. Nise Ou (偽王)
7. Onshitsu (温室)
8. Hidari Kiki no Ethan (左ききのイザン)
9. Manatsu no Yo no Planet (真夏の夜の惑星)
10. Kinyou no Yoru no Shuukai (金曜の夜の集会)

Notes:
The one-shots "Hanshin" and "Suimu" were published in English in the manga anthology A Drunken Dream and Other Short Stories by Fantagraphics on September 27, 2010.