Not sure about the translation of Ryuujou's thoughts. And anybody knows what "エグレテル" means?
...well, according to rikaichan, えぐれる can mean 'to be hollowed/gouged'. えぐる with similar kanji can also mean 'to cause emotional damage' or to 'relentlessly bring the truth to light'. So... maybe cause emotional pain or say harsh truth? I'm unsure though, since it is Hoppo who said that, it is as if she is commenting her own words.
...well, according to rikaichan, えぐれる can mean 'to be hollowed/gouged'. えぐる with similar kanji can also mean 'to cause emotional damage' or to 'relentlessly bring the truth to light'. So... maybe cause emotional pain or say harsh truth? I'm unsure though, since it is Hoppo who said that, it is as if she is commenting her own words.
She might also be calling Ryuujou so flat as to be concave...
What's wrong?...Hmm?I'll ask Onee-chan how to make them big like her.You have no boobs...
I pity you...I told you...To not come he-...I want to know about that too...!!Wha!?Guha!?Major DamageMedium DamageMinor DamageAh! This kid must be Seaport Hime's little sister...You don't have any either...Growing bigger later is definitely obvious!!Ryuujou-san!
Hold onto yourself!!