Zamuzekuta

Ichika, once a successful junior model, is now a deadweight idol at her talent agency.
As a result, her manager—who is also her boyfriend and nearly a decade her senior—tells her that in exchange for not getting fired, she must participate in a dangerous reality dating show...
Set in near-future Japan, this is a dating show × metamorphosis suspense thriller!!

(Source: Futabasha, translated)