Sakuranbo Syndrome: Cupid no Itazura II

A condition known as "Progressive Rejuvenation Syndrome" causes a person to slowly regress in age. The only known way to slow its effects is through daily contact with the saliva of a specific individual. In this story, Munenori Agawa is the only person whose saliva can help Rena Amami, placing him in a difficult situation. His relationship with Sayako Asou becomes strained due to the demands of this unusual medical requirement. The resulting emotional tensions explore the challenges faced in maintaining relationships under such extraordinary circumstances.