Novo Nordisk is developing a new study medicine NNC0519-0130 to improve the treatment options for people living with type 2 diabetes and excess body weight. In this study, the concentration of NNC0519-0130 in the blood will be measured and its safety will be evaluated. The participants will either get NNC0519-0130 or placebo (a "dummy" substance), which treatment the participants get is decided by chance. This study will test up to 7 different doses of NNC0519-0130 and will last for about 28 weeks.

Inclusion Criteria:

• Male Chinese participant.
• Body Mass Index (BMI) between 24.0 and 39.9 kilogram per square meter (kg/m^2) (both inclusive) at screening. Overweight should be due to excess adipose tissue, as judged by the investigator.
• Considered eligible based on the medical history, physical examination, and the results of vital signs, electrocardiogram (ECG) and clinical laboratory tests performed during the screening visit, as judged by the investigator.

Exclusion Criteria:

• Any disorder which in the investigator's opinion might jeopardise participant's safety or compliance with the protocol.
• Presence or history of any clinically relevant respiratory, metabolic, renal, hepatic, cardiovascular, gastrointestinal, or endocrinological conditions.
• Glycated haemoglobin (HbA1c) greater than or equal to (≥) 6.5 percentage (%) (48 millimoles per mole [mmol/mol]) at screening.
• Use of prescription medicinal products or non-prescription drugs (including Chinese traditional medicine or local medicine) within 14 days before screening, except routine vitamins, occasional use of paracetamol, ibuprofen, acetylsalicylic acid (ASA), domperidone or topical medication.

According to the Novo Nordisk disclosure commitment on novonordisk-trials.com

Sponsor staff involved in the clinical trial is masked according to company standard procedures.