Onsen Wakusei by Kakubayashi Tsuyoshi and Nobuyuki Takagi — Abandoned


In a certain star system, there is a small planet called the Onsen Planet. The entire surface is covered in hot springs, and the ones who manage them are the four Santa Monica siblings.

Chapter 1: Welcome to the Onsen Planet! released Mar 17 '09
Chapter 2: The Princess appe~ars~!! released Jun 6 '09
Chapter 3: Nino comes for a visit! released Jul 13 '09 Yuri
Chapter 4: Aqua's recommendation! Onsen specialty released Oct 18 '09