Type-Moon, My Master Is Arcueid?

Reborn once again, Ian becomes Chaldea's Heroic Spirit fusion vessel in Mash's place. Having inherited Galahad's Spirit Origin, he is ready to set out on the journey to save humanity. As long as Ritsuka Fujimaru appears in Chaldea as she did before, he will be her most trusted partner and see this journey to save the world through to the end. This time, he absolutely won't let the savior be alone again! And he did just that. Only, "The name Chaldea sounded so interesting that I just had to come." That was the reason given by the golden-haired, red-eyed girl named Arcueid when she appeared in Chaldea as the final candidate to become a Master. And now, she says: "What are you staring at?" "Is it so embarrassing for you to save the world with me?" "Well, it might be a little embarrassing." Sajyou Manaka said from the other side.