Brother X 3

Two brothers in their twenties gain a six-year-old brother when their father remarries. The middle brother, who is protective by nature, immediately senses danger from his older sibling, whose interest in the young boy goes beyond normal brotherly affection. He becomes determined to shield the child from any harm, even if it means confronting his own family.

The older brother, a shotacon, begins to show unsettling attention toward the new arrival. The middle brother must navigate a delicate balance between keeping the peace in the household and ensuring the safety of the youngest. As tensions rise, the family dynamic becomes increasingly strained, forcing the middle brother to make difficult choices to protect the innocent child from a threat that lurks within their own home.