Anons I think I got it now. Asa represents for a Christian nun who dedicates her life for God (Chainsaw man) and Jesus (Denji). Her joining the Church, being the Church's poster girl, solitary ideal and life, disgust of sex, Pochita/Denji reaching out their hands and invite her to their world (Heaven), all pointing to a nun symbolism. That's why Fujimoto never depict her relationship with Denji as romantic or sexual, totally not like his and Yoru's relationship, because Asa's love for CSM/Denji is never supposed to be a romantic one .... amirite?