Hana wa Nido Sakimidareru

Honoka has been in love with her childhood friend and company president, Kei, for many years. Honoka had been waiting for Kei to marry her when he turned 30, believing him, but Kei ends up marrying a young lady he doesn't know for political reasons... Shocked, Honoka tries to use a brothel for women, but...!?

(Source: Flowercomi Like, translated)