I also don't like the end, but after all the people who the ML kill, if he didn't die, he would have to spend his whole life in jail, so I think it was better to die
What a shame about the ex-boyfriend and the twin, until they appear the series looked very good. They should have focused more on how he overcame death and how he fell in love again, not all the time the ex-boyfriend trying to get in the way and the crazy twin trying to get out of it with her ex-brother-in-law