icha-icha
Openly being affectionate and flirty with a romantic partner. The kind of PDA that makes everyone around slightly uncomfortable.
💡A couple at a cafe being overly affectionate — 'Those two are always icha-icha in public!'
カップルがカフェでいちゃいちゃしている。
The couple is being icha-icha at the cafe.
The newlyweds were ___ the entire vacation.
新婚夫婦は旅行中ずっと○○していた。