If you're looking for anime similar to Sake to Sakana, you might like these titles.
Tamaki Suzuhara is a high school student who is skilled at hunting people. She tracks down criminals who have been judged as having no chance at redemption and gathers organs for the needs of patients.
After their punishment game backfires, Keiichi, Mion, Rena, Satoko and Rika are forced to parade around the village in embarrassing costumes. Once they reach a fork in the road the club decide to visit the nearby abandoned village of Yagouchi, partly to show Keiichi and Rena around and partly to escape the stares of the villagers! When they arrive in Yagouchi, after hearing about the abandoned quarry over the hill Keiichi and Rena decide it would be fun to investigate. But Rika and Mion try to talk them out of it, as two people died there of unknown causes seven years previously. What happened at the quarry back then, and what exactly is 'the pit' that Rika keeps referring to?
When a strange group of men attempt to kidnap Atsuko Fukune, a dancer at a club, she seeks the help of Mamiya Mugen, a famous detective—who also happens to be a child. When it turns out that other girls have gone missing, Mamiya, with the help of his butler Alucard, springs into action to solve the mystery.