Also, Jeanne is immune to Diarmuid's Love Mark charm magic since she's pure. This causes Diarmuid to become infatuated with Jeanne, not romantically but out of respect. Sola Ui misinterprets this and becomes exceedingly jealous and impulsively use her Command Seals she took from Kayneth to force Diarmuid to make love to her. Kayneth, after getting the additional Command Seal from Kotomine Risei and killing him, is confronted by Kiritsugu. Kiritsugu had Maiya spy on Sola Ui and discovered the affair between her and Diarmuid. This along with Kayneth being crippled in his dual with Kiritsugu, causes him to go insane and use his one Command Seal to murder Sola Ui and commit suicide. Kayneth, with no hope of winning the Grail and no reason to live, shoots himself in the head.>>171973591
In Fate, and all other routes Jeanne has no wish for the Grail but wants to prevent it from falling in the wrong hands. Shirou has a similar relationship with Saber in that not only is he in love with her, but he also wants her to live for herself and find happiness rather than live as a Martyr. Jeanne is torn over her feelings for Shirou and her duty to God like in Apocrypha, but finally admits that she is in love with Shirou and the two reunite in the Reverse Side of the World like in Apocrypha with Sieg.