Thank you for the suggestion!
Although I added this to make it easy for returning players to meet the new personalities, I think I will make it possible to meet any personality this way.
After all, players can already meet a specific personality using the custom girl system, but they might not want to have to choose the appearance, name, etc., themselves.
However, to prevent the railway station from being the go-to place to meet girls (instead of the random encounters in town), I think I'll add this as an unlockable and maybe place some sort of limit on it, perhaps a cooldown between uses.