Together-Breast Cancer Support Platform

Inclusion Criteria: Mentors: * Age ≥ 18 years * Self-identify as Korean * Able to read, write, and speak both Korean and English * Diagnosed with breast cancer ≥ 2 years prior to enrollment * Completed active treatment or currently on long-term maintenance therapy * Access to a smartphone, computer, or similar device compatible with the study platform * Willing to participate for at least 3 months * Willing to complete required training and surveys Mentees: * Age ≥ 18 years * Self-identify as Korean * Able to read, write, and speak Korean * Diagnosed with breast cancer * Currently receiving treatment (e.g., chemotherapy, radiation therapy, recent surgery, or endocrine therapy) * Access to a smartphone, computer, or similar device compatible with the study platform * Willing to participate for at least 3 months * Willing to complete required surveys Exclusion Criteria: * Individuals who do not meet the inclusion criteria * Individuals unable to use the online platform or required technology * Individuals deemed non-compliant or inappropriate for participation based on investigator judgment (e.g., inability to complete study procedures) * Mentees diagnosed with ductal carcinoma in situ (DCIS)