Hello, according to the relevant provisions of intellectual property law and trademark law, identical or similar trademarks with the same Chinese and English characters in different categories do not constitute an infringement of trademark law (except for well-known trademarks).

For example, if the existing product category of the romantic story you mentioned is wedding services, then it will not violate relevant laws if you use the romantic story to register a food trademark. Another example is well-known trademarks like Nike. Although the existing product categories are sportswear and shoes, other merchants cannot use Nike to register products in any other field. This is the protection of well-known trademarks under the trademark law.

It's totally okay to be in a situation like yours.

Hope it helps.