Need help remembering old h-manga title please help
My External HD just died and am now trying to recover as much of my backup collection.
I can't remember this old h-manga's title or author but the storyline goes like this.
A scientist ends his grandson 3 girl robots to take care of. The grandfather sets up the girls like rabbits that in the event that they end up sad they would die. But instead of dying, they would blow up, destroying pretty much a huge chunk of area where the grandson lives. To prevent this from happening, the grandson has to have sex with them constantly to replenish their "happiness" level. The girls can actually combine like Getter Robo wherein it if all 3 combine it becomes an adult version of whomever's the head. It can also combine with only 2 of them.
If I recall correctly, there might be 3 volumes more or less.
Can anyone help please?
Edit: Never mind. Found it.
release
Shine