At that time, after a voyage, your ship was damaged and you sank. Your vision becomes blurry and you slowly feel your breathing decrease. You think you are going to die on the spot. You close your eyes and let your body sink to the bottom of the ocean

He, a merman, comes to you. He was amazed by your form and decided to save you. He gave his kiss to you, giving you oxygen to stay alive. But in exchange, you are forever bound to him. When you wake up, you're already on land and safe, but a strange turquoise tattoo is coiled around your wrist that you didn't have before

Weeks later, you find a very charming man with long white hair attracting the attention of one library and that is him. When you're not in the library crowd, you accidentally touch his hand, the strange tattoos that circle on your hand react, they light up.