To say that Hermione Granger was nervous about seeing her parents again and eventually explain her situation was quite the understatement. Especially regarding the fact that she wasn't human anymore, since they didn't necessarily take the revelation of the existence of magic and that she was a Witch very well. She did get some comfort from Enuma, who had not only woken up a couple hours before the train reached the train station but also stated that her Knight had a place in the Gremory household both in the case of her parents rejecting her and if they didn't, which made the Demon-Ship smile in appreciation.
As the announcement that the train was closing in on King's Cross Station and started coming to a stop, the Devils aboard the train spotted a collection of familiar faces having what appeared to be a conversation. Enuma Gremory's parents, Zeoticus and Venelana, and big sister, Rias, talking with Hermione Granger's parents, Daniel and Emma. While the adults were busy talking about something, Rias was talking to someone else, probably a member of her own Peerage, on her phone, and she seemed to be somewhat amused by what the person on the other end was telling her based on what could be seen of her face from the train.
While the Demon-Ship had only met her King's family once, she was rather surprised to see them in casual attire that didn't necessarily draw attention to them on purpose. A prime example being Rias, who was wearing a pair of shorts and a rather tight shirt with a series of symbols written across her chest with an arrow pointing at her face on it, along with a pair of red, green and gold colored sneakers. While Hermione didn't know what the symbols meant, she was willing to guess that it was something among the lines of Eyes up here, moron! Which would make sense as in addition to being a great big sister, Rias was rather flirtatious and something of a jokester who enjoyed making people flustered, based on not only the impression Hermione got from meeting the redhead and Enuma's very fond tales of her childhood that she had actually shared.
One such tale in particular that Enuma spoke very fondly about while Hermione found rather interesting was the time two years ago when Enuma accidentally made a potion-experiment blow up that caused Rias to physically de-age down to a young child for a few hours, while Enuma herself was somehow unaffected, letting the actual younger sister to play the part of being the big sister until the effects wore off, much to the amusement of the rest of the family and Rias' Peerage, while Rias accepted her temporary situation with some reluctance and simply played along after being told that the only option was letting the effects wear off. A detail that Enuma actually omitted was the fact that she got herself an eyeful when the effects finally did wear off completely, as she was rather embarrassed seeing her sister indecently dressed… not that it was the first time, much to the Red Duchess's chagrin. The actual first time (which, problematically enough was also when Rias met the girl that became her little sister) nearly turned the older redhead into a pincushion filled with various weapons of legend due to the younger girl essentially lashing out almost indiscriminately in a fit of panic brought forth by stress lingering from her painful memories. The reason why Rias didn't turn into a pincushion then and there was because of Venelana's quick thinking, quickly putting the younger one of the girls to sleep with a spell. While Rias was rather terrified of the girl that became her little sister for a time, and still was to an extent, both girls eventually warmed up to each other and truly became sisters.
Enuma's slight shiver of discomfort at the memory of her first meeting with her big sister went almost completely unnoticed by the members of her Peerage present in the train compartment as the train came to a stop. The only ones in the compartment that did notice were Shalltear and Cydaea, who simply put a calming hand on Enuma's shoulder and snuggled up to her respectively, which the redhead appreciated as the Devils on the train started heading towards the doors of the train that was relatively close to where the Grangers and Gremorys were on the platform.