Aika was troubled when she learned her daughter was cheating, especially after being consulted by her son-in-law. Feeling responsible for her own past infidelity and divorce, which left her daughter lonely, she regretted passing on a tendency toward unfaithfulness. Realizing she was the root cause of her son-in-law's suffering, she chose to take her daughter's place with him as an act of atonement. For Aika, this became her only salvation.