Overview:
As the age moved to Showa, and the waves of modernization pressed in, the perishing tentacle monsters....
However, one tentacle rose up. Continually assault girls so you can leave descendants!
Mercilessly punch! Kick! Send tentacle attacks. Once you knock them down, rape them slowly.
** If the girls resist, beat them hard so that they are under control! A variety of girls appear in all nine stages.
As a tentacle, you need to house your seed in the wombs of young girls, so don't let them escape.
Catch the girls, and stick your tentacles up their wombs. Impregnate them all and don't even let the last one escape!