Bubble Ring Rendezvous

When I was young, there was still the glamorous scent of the bubble economy.
Everyone was getting all kinds of things from their boyfriends, such as high education, high income, and high height, but I didn't want any of those things. The only thing I wanted was "sincerity.

Honesty, work ethic, and warmth and sincerity. Yusei Arima's husband, Sensui, is by all accounts the ideal husband.
However, at a college reunion, Shiori, a woman who knows the secret of Sensui's past, appears.
Yusei and Sensui get into a big argument when Shiori makes a reference to "that time when we were students.
This causes Yusei to slip back in time to a university 25 years ago, when there was a bubble economy in the air!
What was "that time"?
Yusei decides to fight back in the past to stop Shiori's trap. What is the truth about Sensui?　Will he still be able to love his partner after knowing the truth!

Inspired by Oscar Wilde's immortal masterpiece "An Ideal Husband," this is a time-slip romantic comedy!