Chiharu seeks help for nasal congestion and visits Dr. Arisu OTSU. The doctor inspects Chiharu's throat while instructing her to open her mouth wide. Dr. OTSU proceeds by putting her nose into Chiharu's mouth, checking for any swelling. Dr. OTSU revels in exhaling her breath, enjoying the sensation. She then guides Chiharu to press her tongue against her own nose, rubbing it provocatively. Diagnosing the issue, OTSU intensifies her pungent breath, pushing into Chiharu's nostrils, and takes control by using explicit tongue actions and nose licking, leaving Chiharu overwhelmed.