Complex sentence: After being defeated he is stabbed by akujiki, his soul that was residing within the cursed blade exorcises the demon in his body, he then takes Ageha's soul with him into akujiki but not before telling Hotsuma to avenge the Oboro Clan.
Split into simpler sentences: After being defeated, he is stabbed by Akujiki and his soul that was residing within the cursed blade exorcises the demon in his body. He then takes Ageha's soul with him into Akujiki but not before telling Hotsuma to avenge the Oboro Clan.