The trip to the Chieftain and the War Priestess wasn't too tricky. Michael anchored his Runic Gate to the spaceship that brought him to his destination while he stayed inside the Origin Expanse to get used to Sacred Constitution's changes.
At this point, Michael wasn't sure how strong he was. His physical strength easily exceeded the limits of a Lesser Lifeform without using Heavenly Beast Physique. Michael was fairly sure that his physical strength was close to the Mid-rank of Tier-4.
'Once I ascend, my physical strength should be close to Tier-5. If I upgrade Heavenly Beast Physique to the Elite Class, it shouldn't be a problem to hold my forte against Oliver.'
Oliver Zeus was the only Tier-5 powerhouse he'd fought seriously until now. Of course, some desperate powerhouses'd attempted to attack him when Extraction had been revealed to the public, but his condition was different at that time. Furthermore, Alice was present long before he could go all-out.