The news article stated:
Daesung was carrying a bible in his car because he is really faithful thanks to his father’s teachings. Yang Hyun Suk spoke about Daesung’s state again, “Daesung was in a big shock from this accident and he cried a lot. Apart from whether it was his fault or not, grieving for the death of the motorcycle driver is much harder for him.”
source : Daum via teambigbang
Please be strong Dae-Sung! Everything is going to be fine!