I'm European and I'm 28.
I went into Uni and studied my local language.
I'm professionally trained to teach it in middle schools and I write for my town's local newspaper about Japanese's culture, from time to time for free.
I'm not not smarter than your average guy nor am I from a wealthy...
@mirewitch honorifics are not gendered in Japanese, -chan is not a feminine honorific.
Mark-chan or Marie-chan sounds absolutely the same to a Japanese person's ears, just endearing ways to refer to these people.
For what it's worth I bought the volumes on book walker, I have no idea if we'll get another manga from Tsumoi Hara but I like overall their style even though their manga are not masterpieces.