Overview:
This is a Harem Visual Novel with strong NTR mechanics set on a disabled intergalactic ferry.
The over-arching goal is that of keeping the captains perverted hands off your three companions and perhaps absconding with a few of his wives, who knows, maybe all of them? You'll have to make some hard choices, sacrifice some morals, and manage not to get thrown out the airlock... in the world of Hikari.