It's a good mistake.

Taehyung lives with his mother in a big house.
He's 16 years old and he is the bad kid, he often get in trouble since his dad died.

Jungkook is adopted, his parents left him at birth and has stayed in a orphanage his whole life. He is 15 years old.

The rest you'll se in the ff ;))

(There will be 15 parts/ chapters)