My Girlfriend Is 20 Years Old

Jin-tae and Dong-sik find the place where their noona and her friend are hanging out. The four of them end up having a fun drinking session together. As his noona falls asleep drunk, her friend Dong-sik helps her into her room and then begins secretly removing her underwear. At the same time, Jin-tae is having an enjoyable time with his noona’s friend, who happens to be his first love.