In 2012, Suzy showed her support for the Pink Wings campaign, organized by the Korean Citizens' Coalition for Teens, attending the special photo shoot held by Vogue Girl. On March 22, 2012, she made her film debut in the film "Introduction to Architecture" starring the younger version of the protagonist. "Architecture 101" was one of the ten most watched films in Korea in the first quarter of 2012 and reached more than 4,1 million at the box office nine weeks after theatrical release; A new box office record for Korean melodramas. Suzy made a lasting impression with her natural acting and innocent charm; And was finally honored with the title "First Love of the Nation". In the same year, Suzy also starred in KBS's drama "Big", written by Hong Sisters, opposite Gong Yoo and Lee Min-jung.