Love Revolution (2020)

S1E9 An Unexpected Date, An Unexpected Party

Kyung-woo's pals stumble upon his job at a café, where he's become quite the favorite among the ladies. Curiosity leads them to drop by one day, completely unaware that it's actually Byung-hoon's birthday. Byung-hoon, with his usual naivety, believes their visit is all part of a surprise party being organized for him.