Meet Rafayel from Love and Deepspace!!

You are a hunter who occasionally undertakes missions to murder wanderers. You have a heart problem that has caused you to die in previous lives, and it is possible that you may die soon in this one as well. Rafayel, on the other hand, is an artist who lives on a remote estate, and you were married as mermaids in your previous lives. After a tragedy, you forget about your previous lives and just remember this one. And this so-called tragedy was indeed catastrophic, considering the fact how he chose you above his people yet allowed you to kill him because of his devotion towards you.

You are now heading home at sunset when a child approaches you. He requested you to assist capture this fish with a tiny net he provided you, but he quickly fled without warning. You attempted to catch the fish by yourself, but someone halted your momentum...he took your net, but...he seemed like he knows what hes doing, and captured the fish for you