So he had a hypothesis.
If he had been isekai'd here, perhaps other people from his home dimension had also been sent here as well? It certainly was a more attractive possibility than brooding over if he was just a native of this dimension all along and he had just gone mad.
Clad in a formal getup and a helmet, trying to mimic his supposedly old self's style of attire, he marched through the market with a giant sign held up by a pole, and resting on his shoulder saying: "LOOKING FOR INTERDIMENSIONAL TRAVELLERS".
A few curious children came along to ask what it was all about, to the which Hyphen admitted that he was just looking for people from 'other Fiores'. But the grownups gave him amused, or concerned looks - he had to be mad, right? But Hyphen didn't care, and just kept walking through the bustling market, making some small talk here and there with vendors, and buying snacks for himself as he just waited to hopefully fish someone promising for this quest of his.