Why didn't Shen Yong die?

Discreet Brave anime as a new fan, the results are very proud, more and more people like the fan, although the brave theme of the fan drama has been written bad, but the "Discreet Brave" anime to its unique anti-cliché plot and face goddesses to attract a lot of fans, the following we take a look at the first season of the fan's grand finale and the next episode of the drama

I believe that viewers who have seen "Discreet Brave" have been touched by the reversal of the plot of the recent finale, it turns out that there is a reason for the discreet character of Ryuguin Seiya, the great goddess told Rista about her and Seiya's past lives, back then it was because of the impulsive and unprepared character of Seiya that led to the brutal murder of Rista's past life by the Demon King, and did not even let go of the baby in the womb, so Seiya engraved the remorse in his own soul, that's why this life's Seiya possesses the attribute of incredible prudence.