Re:Zero's Natsuki Subaru's Return By Death ability is both a blessing and a curse rolled into one. While this power allows Subaru to resurrect himself and change things for the better, it also means that he experiences death in many gruesome forms along the way. Using this power takes a huge toll on his mind, breaking Subaru on more than one occasion.
Source：https://www.cbr.com/rezero-subaru-deaths-chronological-order/
