Alright, this took me long enough, with a HUGE thanks to Molokidan for his exemplary translation
Past and future collide! A pair of lovers named Rin and Clara stumble upon...a visitor from another time, only it's not the most...pleasant time.
As Molo informs me, this was written shortly after WW2 ended, and can be seen as a sort of
political outcry, although it does contain a bit of...well, you might see that maybe Shotaro Ishinomori was an influence on Go Nagai in unexpected ways. The shocking part is the fact that Ishinomori
made this into a manga in the 70s. You've been warned.