
So to address the comments horrified that the MC is going to betray the ML. I read the novel, so let me tell you what happens.
MC scams the older brother by telling him false information. He overtime collects the money. After a time skip, MC had already told ML about the scam, so ML is made completely aware.
So no, he does not betray ML. ML is made aware of this deal. To be fair, even though it was a scam, i also thought MC would be quiet about it and it would later cause drama. But nope, no drama, just a happy blissful couple happy scamming an evil family member

Sadly it seems like the site that had volumes 1-3 translations has been closed since I read it.
The volume 4 translation is here: https://app.yoru.world/en/story/378
Volume 4 takes place two years after. Its a fluffy cute read on its own if you wanted to read it.

wait! omg I just realise, I copied volume 1 and 2 on a google document so I could read it on my kindle. Sadly it doesn't seem like I did the same for volume 3, I'm sorry. But here's a link if you wanted to read it:
https://docs.google.com/document/d/e/2PACX-1vRsdNpD6FVR4vuznoRA97zOVwXsM5wYTh1YRKX9FchwwA5T5H56RLFsHmd60A2YyyCoF5-1i_xuDUa8/pub

According to this, he finally confesses in ch.38!
https://sekaiichi.fandom.com/wiki/The_Case_of_Ritsu_Onodera_No.38
Hey, so the novel has 4 volumes, but sadly the site that had the first 3 volumes translations is down... But I just remembered I copied the first two volumes on a google doc so I could read it on my kindle:
https://docs.google.com/document/d/e/2PACX-1vRsdNpD6FVR4vuznoRA97zOVwXsM5wYTh1YRKX9FchwwA5T5H56RLFsHmd60A2YyyCoF5-1i_xuDUa8/pub
Sadly I don't have volume 3? Unless this document has it and I just didn't label it. But from what I found I can't find a volume 3 in my google docs, sorry
'Heeseong went inside and transformed into his human form.' in the novel is where the manhwa leaves at
The volume 4 translation is here: https://app.yoru.world/en/story/378
i am in love with you
ヾ(☆▽☆)
Thank you XD
ur literally the goat
Thank you so much!!!