After Wearing White Stockings, My Sister Called Me Loli Mom

Since retiring, Xu Yan has lived a life of two points and one line every day. His younger sister, who is still in college, has been in a cold war with him for six years. She can't even speak a hundred words in a month. I thought this situation would last forever, but one day on the way to work, Xu Yan discovered that a robber beast had appeared in his sister's school. In order to protect his sister, he went home without hesitation, put on white silk stockings, and transformed into the magical girl Momang who shocked the magic world. The result... After saving her sister, she recognized her loli-shaped self as her mother on the spot? Xu Yan didn't remember that she was still beating tiles. [It's not a remarriage!