Nothing Serious 2021 Woo Ri is a 33 year old single man He is a rookie reporter and he writes a sex column, although he wants to become a novelist Woo Ri hates being lonely, but he is not very good with romantic relationships Ja Young is a 29 year old single woman She has a daring personality Ja Young strives to become a mature 30 year old woman, but she has experienced failures and is mired in debt Her boyfriend dumps her after dating for only a month Ja Young declares that she will not date anymore Woo Ri and Ja Young meet through a dating app