Rhode was relieved that Lilian didn't pester him about Erin since she heard that Erin was also heading to the Void Territory. Lilian asked Rhode who Erin was and warned him to be careful of her. But the so-called 'be careful' was from a different angle.
"That Ion is annoying and always so scary. Big Brother Rhode, you must be careful because his younger sister may be equally scary. But I believe that you won't be bullied by her! If she dares to bully you, show her how strong you are! I'm sure that you will be fine, Big Brother Rhode!"
In response to Lilian's suggestion… Rhode simply smiled in response.