Kilkapul sacrifices himself and his family in order to summon the “hyper-conceptual reaper” Thanatus, who merely splits into two copies when sliced in half and even manages to lightly bruise Seiya. Even when they retreat to the Divine Realm, the reaper follows them, and makes quick work of every god and goddess that tries to bring him down. Meanwhile, Seiya’s party just runs.
Seiya may not know how to beat Thanatus, but he has a pretty good idea who could beat him: Valkyrie. He knows she’s painting, and and sets things up so an attack by Thanatus destroys her almost-finished canvas, enraging her into fighting. She ultimately defeats Thanatus by using “Gate of Valhalla,” a godly technique she believes no human could achieve. But Seiya wants to train with her and prove her wrong.
When Rista checks in on the two, they appear to be banging in Valkyrie’s bed, but Seiya insists it’s “just training,” I’m a little skeptical, as Rista is, but she’s gotten so obsessive about her love-hate relationship with the lout that she’s taken to making dolls out of her own hair—and developing ever more manic faces. She’s also developing a self-defeating neurosis about her body odor, leading to compulsive bathing till her skin is raw.
Ishtar informs them the fourth Heavenly King and his army are advancing on the Roseguard capital, so Seiya & Co. head back to Gaeabrande. But the boss is dealt with not by Seiya, but by the “Warmaster”, an elderly but extremely powerful knight who dispatches the HK with one shot and the army with another. The catch is, after his immense attacks he reverts to infancy, leading to the strangest Ristaface to date.