話わ題だいになる

expression, godan verb (-ru)

become a topic of conversation; be in the news; be talked about

Used when a person, event, or thing becomes widely discussed, either in the media or among people. Often implies a sudden or notable rise in public attention.

• 彼かれの新あたらしい発はつ明めいが話わ題だいになっている。

  His new invention is the talk of the town.

• その映えい画がは公こう開かい前まえから話わ題だいになった。

  That movie became a hot topic even before its release.