Emasculating Business Trip Massage

How did a straight office worker end up in an aphrodisiac-powered beauty massage!?
Hiroki Ichinose is a dime-a-dozen office worker who feels the stress of being repeatedly sent on business trips. On one such a trip, his co-worker suggests he undergo a beauty massage, and so Hiroki ends up ordering a 5-day course for around $100.
"Good evening! Thank you for your reservation. I will be your beauty specialist tonight. Call me Hiiragi!" The friendly and approachable Hiiragi gives Hiroki a sense of security. But after the session, his body is all hot and bothered, and so he ends up touching himself to release the tension. His masseur Hiiragi is the person cropping up in his thoughts. Over the next couple of days, Hiiragi's massages escalate in intensity, until Hiroki eventually can't stop his excitement anymore... Will this spell disaster...?

(Source: Renta!)

Chapter count includes an extra