according to the LN/WN, after the revelation of Raphael's name, instead of him telling the story to Bakarina while she's doing her business (yeaa farming I know) the ritual was explained while he has not received the blessing from saint Bakarina (still in the basement) and even more so the reason that drives him to enact his revenge was missing from the manga (he was manipulated by the dead wizard by changing his mother's last wish, from "live on, be happy" to "revenge me" or something like that)