Galileo Tesoro
In the past, Roberto was the son of a caring father. However, his father was killed when his house was bombed, leading to Roberto to adopt his ruthless personality. Back in the present, Hazuki becomes ill and the sisters stop at a hospital in Russia for treatment. There, they encounter Roberto, Cicinho, and the crew of the Black Ganymede, with the parties fighting over how the limited resources of the hospital should be allocated. The pirates tell Hozuki that they were orphaned and that being a pirate gave them a reason to live. Roberto goes on a massacre killing the pirates until Hozuki intervenes, causing an explosion that leaves the hospital exposed to the frigid air and causing her pendant to activate to break up the fight. Roberto was about to kill Cicinho and a few remaining pirates, but runs out of bullets. Hazuki is given some medicine from the hospital and recovers from the illness.
Aired 15/11/2013EP 6 - Galileo Tesoro

Galilei Donna
Three sisters, Hozuki, Kazuki, and Hazuki, are descendants of Galileo and have completely different personalities and tastes; they never meet eye-to-eye. One day, the girls are suddenly attacked by a mysterious organization. The organization was after the "Galileo Tesoro" which Galileo Galilei was said to have discovered. Still unaware of what was going on, the sisters escape on the airship they built after the sudden attack. But it won't be so easy for these three sisters to help each other out in a pinch when they're constantly at odds with each other. What is the Tesoro, and what is the organization after? And what about the relationship between the sisters? It's a threesome of cute girls, action, and mystery!
(Source: Fuji Creative)