"Мій друг пише цікаві оповідання."

Translation: My friend writes interesting short stories.

[gabzerbinatoEng]

Don't neuter nouns ending in double consonant+я like this inflect for number?

[deactivated user]

In nominative and accusative case, singular and plural forms are the same: оповідання can mean either 'short story' or 'short stories'. However, in other cases they are different: e.g. genitive is оповідання for singular (yes, it's the same as nominative xD) and оповідань for plural.