I believe by "'big woman' boom", the artist means a very recent trend on Pixiv to post pictures of デカ女, unusually huge women. (I think the word is read as DEKA-onna, literally "deca-woman", as in the metric prefix deca- for multiplying by 10.) This Pixiv page explains the term, and post #7638840 (a KonoSuba reference) pokes fun at the trend.
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.
Where the hell did this one come from...? I found it on a BCY reverse search one day, and never was able to find the proper source for it. I think it might've been in one of the ads...? But from where? And who drew it? It's driving me crazy.
