Mrs. Roger and Roger Jr. entered the King of Iron Fist Tournament 5 to look for Mr. Roger who had been missing.

After all their perseverance, they had finally found him indulging himself in a carefree life of elegance
without an ounce of family responsibility on his mind. Disgusted with what had become of her husband,
Mrs. Roger divorced him right then and there.

[The former] Mrs. Roger and Roger Jr. had become members to a fatherless home, and times were tough.
Just then, an announcement about the King of Iron Fist Tournament was made,
and so for the purpose of living a rich and stable life for themselves,
The former Mrs. Roger and Roger Jr. decided to take part in the tournament once again.