@Lazybum : She's been grumpy from the very first introduction.
--> Not this grumpy. She was bullying Souta in her first appearance and Miyamura came in and stopped her, gave her a gentle lecture, and we don't see her acting like a brat the next few times she appeared. She was nice enough that Souta often invited her to the house to play and we never saw her being rude again. Now she's being like Hori 2.0 and literally scowling in 90% of the panels she appeared in lolol