A risk taker diver, Yeonjun meets a trainee lifeguard named Beomgyu. Both boys are the complete opposite with Yeonjun being a dare devil and Beomgyu being a careful sweetheart. Yeonjun is rather flirty in his remarks often making up pet names for people he meets such as ‘darling’, or ‘cutie’. He also makes nicknames as he later calls Beomgyu ‘Beoms’ and ‘Gyu’ after he learns his name and after their banter over his risky lifestyle