KBKD-1105 Confessions Of A Fifty Mature Mother Akemi Kato Miku Natsukawa

When Seiji returned home, his mother-in-law Akemi was crying. His father eloped with a woman, and his older brother Shinpei brings in a woman every day and is addicted to sex. What action did Seiji take to save his mother Akemi in such a situation?