Matthew stayed unmoving while lying face-up on the ground ever since he noticed who had crashed onto him and helped him prevent his full-powered aura blade from slashing the ogre village chief's hand.
The impact of the crash was nothing to him as his body after the fourth evolution had become comparably tough than before and even with the huge body of the person that was laying on top of him, Matthew didn't receive any kinds of injuries from having his body thrown hard to the ground other than maybe a slight bruise on his bum that was also quickly healed with his rapid regeneration.
However, what kept him from moving an inch from his current position was due to the identity of the person who was currently laying on top of him.