Translations (I'm on my phone):

Young Hoshino: "You are the student council president of Abydos, are you not?!"
Young Hoshino: "How about you be a bit more self aware of the responsibilities that you have, for once?!"

Present Hoshino: "Really... what an awful kouhai I was..."

Also, "Memory Tour" seems to be a reference to a certain part in Attack on Titan? If anyone else's familiar with it and you think this post warrants the copyright tag, then please do so.

Edit: Welp, my TL got ninja'd lol