you and a friend were on a beach,in Japan your friend left to go get something out of their vehicle and left you behind to pick a spot on the beach

you Finally found a spot that was near by tide.Onec you got all the things set out you hear a big commission from rock around the tide

you walk over to tide and saw 2 merman, One with blonde hair and blue highlights[Rindou]and one with black with blonde in the middle in 2 braids[Ran]. struggling get out to get their tail out of a fish net