Smochi has been sharing pictures of Marina Martin Leary and pretending to be them for like the past 15 years now.
Here is Smochi sharing a picture and making up a completely fabricated story to go along with it. This is in the Cheesebox log. Anyone with access to the server can just search for it.

In the chatlog smochi mentions that the guy in the right is the one trying to seduce her. Marina's husband is actually the guy on the left. They had been dating for many years and married in 2017, same year that chatlog is from.

Marina's life just doesn't line up at all with Smochi's. Marina has a pretty tight CV that leaves no space for her to have been a teacher in South Korea.
https://www.linkedin.com/in/marina-martin-leary-15814a27/details/experience/

there's no space for it, and you don't have to dig deep to find Marina just chilling and having a regular life during the time smochi claimed to live in SK.

the sister and tl;dr of the instagram

A couple of years ago someone found the connection between the pictures smochi posted and marina. they shared it around through DMs. Smochi freaked out and told everyone in the server that someone was spreading around her sister's instagram and to block contact from anyone from outside the server so most didn't even see the profiles.

It's not possible for this woman to be smochi's sister because this woman has no sister called April (smochi claims their name is april). Anyone who is in cheesebox can just ask Hmnid who would remember these things as he was around for all of it.

Don't bother marina. They're just someone smochi picked to larp as.