Fam and Ihrie are willing to do almost anything to make a buck. So when these debt-driven damsels discover the potential profits to be hand in recovering a particularly dangerous mystical object, it means mortal peril for an entire civilization. There's no guarantee that they'll live long enough to squander the fabulous wealth they've been promised, and danger lurks around every turn as they cross dark seas in pursuit of legendary evil. Haunted by an unspeakable curse, plagued by doomsday prophecies, plotted against by untrustworthy traveling companions and looked in desperate race to gain the Ultimate Power, Fam and Ihrie are the Ruin Explorers!

Seventh season of .

According to an ancient legend, mermaid's flesh can grant immortality if eaten. 500 years ago, Yuta unknowingly ate a piece of mermaid's flesh. For centuries, he travels across Japan, hoping to find a mermaid, thinking she may be able to make him a normal human again. When he finally finds one, he discovers that she and her companions have been raising a girl to be their food so they can eat her and take on her youthful looks. That is how mermaids stay young. Yuta kills the mermaids and rescues her, but she has already eaten some of the mermaid's flesh. Although he had to kill the mermaids, Yuta isn't too disappointed. Yuta's once lonely existence is now over, as he has found a companion in Mana. And Mana, who had been trapped in a small hut her whole life, finds delight in even the simplest of things. Together, Yuta and Mana attempt to seek out more mermaids, trying to become normal humans again.