User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-16281343-20150721123516/@comment-111.94.43.65-20150721133704

vali lacks love from his family and he always fight for his own sake and not for others that why he feel that ise is stronger than him

after all sacred gear power grow because of the user feeling. ise initially did not harbor that much of hatred to rizevim as much as vali does. but everything that rizevim did to ise only serves to make his desire to protect the one loves even stronger. not only that ise has a lot of other passion (e.g erotic things) than vali who only like to fight strong people