The Hero Laughs While Walking the Path of Vengeance a Second Time, Vol. 8 (light novel) The Eternal Avenger

Surviving thanks to Yuuto’s sacrifice, Kaito and his companions join forces with the Demon Lord Leticia and the previous hero, Towako Kuroi. They are finally informed of the world's origin, structure, and the truth behind it all. Meanwhile, Princess Alicia uses the power of the goddess to rewrite reality according to her wishes. Kaito, determined to exact his ultimate revenge, charges in with blazing hatred. But will he really be able to get the last laugh?