リアコ

noun

being in love with an idol/actor/etc.; fan in love with an idol/actor/etc.

Slang derived from リアルに恋している (really in love). Used in fan communities to describe a fan who has romantic feelings for a celebrity, or the state of having such feelings.

• あのアイドルにリアコしてるファンが多おおい。

  There are many fans who are genuinely in love with that idol.

• 彼かの女じょは完かん全ぜんにリアコで、推おしのブロマイドを集あつめている。

  She's totally a real-love fan, collecting her favorite idol's photos.