Hi, I am making this post for anyone who likes to know when a certain event takes, such as first kisses when the leads get together if there are any breakups, and anything else that pertains to the show. WARNING this post WILL contain spoilers, so please do not view it if you want the surprise factor in your watching. Okay now here are some timestamps/spoilers for Happiness:

Ep 1. Saebom gets infected

Ep 2. Leads start a contract marriage

Ep 4. Lockdown is set

Ep 9. Antibodies are found; Yihyun gets infected

Ep 11. Saebom finds out Yihyun is infected; Leads confess to each other; Saebom makes it out of the apartment

Ep 12. First kiss, lockdown is lifted

My rating: 8

Happy watching!