Sword Art Online: Project Alicization, Vol. 4 (manga)

After Ronie and Tiese try to save their friend from the clutches of noble
knights Raios
and Humbert, they end up getting captured themselves! With the
two girls bound and
helpless, Kirito's going to need Eugeo's help to save
them...but Eugeo finds himself
paralyzed by the thought of breaking the Taboo
Index! With the fate of his page
hanging in the balance, can he violate his
world's most sacred code to rescue her?