After completing his clinical residency, Dr. Ono trained extensively at Kitasato University in plastic and cosmetic surgery, gaining broad experience not only in general plastic surgery but also in breast surgery, gastrointestinal surgery, orthopedic surgery, and emergency critical care. After becoming a board-certified plastic surgeon through the Japan Society of Plastic and Reconstructive Surgery, he worked at KJC Kitasato Aesthetic Medicine Center.

He then joined Tokyo Cosmetic Surgery, specializing in rhinoplasty and breast augmentation, accumulating extensive clinical experience. Dr. Ono developed and presented his own breast augmentation technique, receiving high recognition for his innovative approach.

In 2022, he founded LOCHIC CLINIC GINZA, where he continues to promote the advancement of aesthetic medicine through domestic and international conference presentations and activities such as serving as a cutting-edge medical producer.