Currently Guy's passive Hot Blooded Guidance is described as

When Guy is in the battlefield, each of your units will Heal themselves by a certain percentage in accordance to the Taijutsu damage they inflict.

As of my testing today, this passive does not have this function, whatsoever. Instead, this functions the same as his 3 star version, and buffs Konoha units combo rate. Not sure if the bug is in the passive description, or in the passive itself.

*** edit**** Also, his chase triggers twice