User blog comment:AquilaeAltair/OnS Theories. Fourteenth Theory - Shiho Kimizuki. A traitor or a person who understands the situation the whole squad is in./@comment-36009152-20190511115634/@comment-38762161-20190903043527

Hm perhaps they understand Kimizuki in a way that he sitll has someone he may lose in any case they worry over Yu. Besides, I somehow believe they trust Yu to be safe around knowing that he's being through hard stuff or ordeals.