Ai×Kagi Monogatari

Akio Ikuta is an office lady working at a real estate company. She's been dating her boyfriend for six years and they know exactly when to orgasm during sex. However, it seems he's not ready to give her a spare key just yet. Meanwhile, Akio is fully prepared for a sales presentation for a new apartment building that the company is looking to sell, but she ends up losing to her junior colleague, Hayato Kirishima, a rich kid who got the job through connections and is always late. To top it off, she ends up teaming up with him to support him! A hot love story with a younger, playful guy!

(Source: Hakusensha, translated)