Well, he could have also asked them to go through artificial insemination. Which is Truth in Television: more than one really old guy and his girlfriend/wife/female donor/etc. uses this as a safer alternative.
Karma Houdini: The fact that Tatsumi hasn't been tortured to death in a manner straight out of the Spanish Inquisition by the same Saints he abused as children is nothing short of a miracle
Kick the Dog: Beats young Ikki pretty bad by tying him upside-down with a kendo stick and kept telling him that his sacrifice of going to Death Queen Island doesn't matter since Shun was going to a worse place.
The Dog Bites Back: When Ikki comes back six years later with a fiery entrance and makes a vow before the crowd to make him pay for what he's done.
Jerk Ass: He brutally abused the kids at first, specially Ikki.
Plucky Girl: This is the girl who, after helplessly watching her grandfather's murder at the hands of Shiva and Agora and being thrown alive inside a burning volcano, manages to hold on the burning rock walls and climb her way up, which gives a dying Ikki his Heroic Resolve back..
Women in Refrigerators Thankfully averted: Shiva and Agora do invoke the trope and try to fridge her with the volcano deal, but she survives.
Break the Cutie: Anime-only, when Crystal went Brainwashed and Crazy and enslaved everyone in the village. Jacob managed to escape and broke down in tears when Hyoga came to help him. He manages to get better, though.