Story: Noona romance gets an ultra chaste makeover in this drama that is bent on showing everything except the affair itself.

Acting: Yoo Ah-in is a real deal. Unfortunately, the drama is heavy on business scheming nobody cares about so I skipped those parts (it's a lot of skipping!) and can't say anything about actors involved.

Music: classical music stands in for sex and climaxing.

Rewatch Value: For insomniacs only. Yes, it's that boring. Too much politicking, too much piano playing, not enough affair. If you are into noona genre, watch properly steamy Dark Desire (Netflix Mexican drama) instead.

Overall: Like Extracurricular (drama about sex trafficking without sex and trafficking), Secret Affair wants to broach a taboo subject (well, taboo in SK I guess) without being controversial. Hence chastely implied that the couple in question is having an affair without showing sex, while wasting its overlong running time on politics of running a concert or something. Do or don't. If you can't do subject justice due to PG rating requirement perhaps leave it to foreign television that has no such restrictions.