Noninferiority Trial Of Sirolimus With Ascorbic Acid Versus Everolimus in All-comers

Inclusion Criteria: 1. Adult men and women aged 19 years or older 2. Patients with chronic coronary syndrome (CCS) or acute coronary syndrome (ACS) who require percutaneous coronary intervention (PCI) (all-comers) 3. Patients who have voluntarily provided written informed consent to participate in the study Exclusion Criteria: 1. Cardiogenic shock within 48 hours prior to the procedure 2. Known hypersensitivity to sirolimus, everolimus, ascorbic acid, or stent components (e.g., cobalt-chromium alloy) 3. Patients unable to maintain dual antiplatelet therapy (DAPT), including aspirin and a P2Y12 inhibitor, for 1 year 4. Women who are pregnant, breastfeeding, or of childbearing potential who meet any of the following: * Have not confirmed a negative pregnancy test prior to enrollment * Do not agree to use, or are unlikely to maintain, an acceptable method of contraception during the study period 5. Clinically significant abnormalities identified during study visits, physical examination, laboratory tests, or electrocardiogram (ECG) that, in the investigator's judgment, may interfere with the safe completion of the study 6. Life expectancy of less than 1 year or presence of serious non-cardiac conditions that may affect compliance with the study protocol 7. Patients who are unwilling or unable to comply with the study protocol