Galaxy Angel Vol 2

From the Broccoli Books edition

Five Angels are on a Mission to Save the Universe! The Angel Troupe continue their voyage to safety, and make a stop at Palnet Oasia, known for its hot springs. Ranpha has an ulterior motive for going to the planet - to find the "Secret Hot Spring" that will foresee her future lover. However, things don't always go as planned. Ranpha and Milfeulle fall into Lulu's trap and are captured. Lulu tells Takuto to hand over Prince Shiva for their safe return. What will Takuto do?

Source: Anime News Network Encyclopedia