From what I've seen of Reiwa age-gap professional-age Romcoms he will not propose to Eliya but Yaeli - one of Eliya's coworkers who has ear piercings and wears a face-covering mask.
"Wait coworker? She works in Alex's store" "I know that was really weird part, I didn't remember hiring a second maid and payroll hasn't changed. Completely bizarre."
In which case, I believe that honor will demand you eat a cornish game hen via your ass.