OSANANAJIMITACHI GA NINKI IDOL NI NATTA: AMAAMANA KANOJOTACHI WA ORE NI MITSUIDE KURETE IRU

Kazuma Kuzuhara, a high school boy, doesn't have to do any work because his childhood friends — idols Yukina and Arisa — shower him with money and gifts. But gradually, their overwhelming love begins to turn into madness…? A dark romantic comedy about living off others’ generosity! (Source: Comic Growl, translated) — Description from AniList community (anilist.co).