User blog comment:AquilaeAltair/OnS Theories. Third Theory (S3) - The reason of Guren's betrayal/@comment-36009152-20190703015918/@comment-36009152-20190904194328

Guren is a sweet person, and if anything can count on him to certainly rescue people over following Saito.

Ooh, tricky ground, Mahiru is caring, but Mahiru-no-Yo is another matter. Wasn't Asuramaru at first when he disguised himself as Mika so caring and the best person for Yu? All for one aim of course and this is where we need to draw a line in the moving water concerning Mahiru-no-Yo's, and whose plans are in store for Guren and others.

There are loads of schemers who know how to do it in Seraph of the End and Mahiru-no-Yo has her own playbook!