Mama Shibori 2 (Mama Shibori no Jijou)

The protagonist is a young boy named Hobara Nao. He's been avoiding his caring mother, who, determined to be a good parent, confronts him about his unusual health issue. She takes him to a female doctor, who diagnoses a rare condition with only one cure: the son must receive 'special' love from his beautiful mother. But the mother isn't alone—the doctor and other mature ladies help her in this intimate task. Will the boy finally be healed? A tale of forbidden familial bonds unfolds.