Todo no Tsumari

Despite all my hard work, that guy... Mother Misako had fallen asleep, face-down on the living room table. The screen of her working laptop illuminated her voluptuous form in the darkness. Her ample curves, slipping off the table and swaying, were being kneaded by the hands of her beloved son, Majime... These weren't feelings for a mother... Every time Majime became conscious of Misako, he was tormented by anguish. The secret his aunt Reika had taught him... As a mother, a wife, a female teacher, Misako poured her heart into her daily duties. She wanted to save her. The reality that suddenly descended upon him. The moment he heard that fact, the sound of the shackles binding his boiling son's rod snapped... (Source: Getchu, translated)