Benjamin successfully returned to his room.
He had hidden a set of clothes at the abandoned distillery on the way out. So, with the help of the Water Ball Spell, he showered, took off his beggar costume, changed back to being the rich young master he was and safely returned to the Lithur household. It was as if he merely took a leisurely walk this afternoon.
At this moment, he has just finished dinner and was seated on his own bed, looking at the small mirror in his hand.
After leaving the prison ruins, he did not return home immediately. Although he was worried about the Church’s attack, the Church was currently in a frenzied state and definitely would not be able to respond quickly. Thus, before the Church began their search, he could move around without too much concern.
This was why he went to the "same old place" Michelle told him about, found the third tree and dug up Annie’s things.