The seme is a mermaid and working in a waterpark as a mermaid and the uke is a chef and owns a restaurant but he is scary looking he is not getting that much customers and the seme helps the uke in the restaurant with customers
https://www.mangago.me/read-manga/the_first_love_of_the_sushi_restaurant_owner_is_a_mermaid/
The seme is a mermaid and working in a waterpark as a mermaid and the uke is a chef and owns a restaurant but he is scary looking he is not getting that much customers and the seme helps the uke in the restaurant with customers