While the growing body of research on Tan Twan Eng's The Gift of Rain (2009) focuses on the protagonist, Philip Hutton's traumatic condition, Chinese identity, and ambiguous identity, this study focuses on the complexity of Philip's interactions between various cultures. The current study investigates the impact of the multiculturalism theme and its impact on the sense of distorted identity and belonging in Tan Twan Eng's The Gift of Rain in the View of Traumatic Theory of Identity Crisis in the novel. Scholars who have studied multicultural portrayals in diverse literary texts, such as Khan, Tiwari, Sheoran, and Tan C. S., have discovered that multicultural situations lead some ethnic groups to lose their traditions and identities. As a result, the multicultural situations represented are seen negatively. However, this study has found that identity creation is described as sharing experiences and having historical experiences by engaging and negotiating with people. In contrast, the sense of belonging is defined as feeling linked and associated with a group of persons. The findings also revealed that multiculturism had a detrimental impact on Philip's identity and sense of belonging since he completely lost his Chinese roots and, subsequently, his British identity after absorbing Japanese culture. The process of multiculturalism that Philip experiences shows that the new cultural practices he creates consist of his own traditional culture and the foreign culture he has acquired. This means that Philip still retains his traditional culture and identity. Therefore, this study concluded that the multicultural characteristics of society may have a detrimental impact on individual cultures, resulting in distorted identity appearance and a loss of sense of belonging. In another text, a contrary conclusion revealed that Philip retains his original identities and traditional cultures while adopting and blending a new culture with a foreign one.