Definitely a new patient. "It's...complicated," Kenshin admitted. "Perhaps it would be best to explain it inside? It's a fairly long story?" Hopefully Robin would be able to help do the explaining. He'd been around long enough at this point that he knew as much as there was to know about this place as basically any Landel's veteran.
Re: [outside of M55]
"A pleasure to meet you, Sen-dono."