The Hero Laughs While Walking the Path of Vengeance a Second Time, Vol. 3 (light novel)

The next target on Kaito's quest for revenge is Eumis, a twisted sorceressfor whom no
avenue of magical tool development was too immoral. But merereprisal isn't enough
for Kaito. To hit Eumis where it hurts, he turns thesorceress's own sister against her...