Kanojo ga Onii-chan ni Nattara Shitai 10 no Koto - Vol. 2 Ch. 18

[MangaDex]

 

[Ecchan]

That is some adorable gang.
The mom is definitely the boss (Kumichou)

 

[Meyahviing]

So Tsugumi knew the answer to a question several grades above her own? Is she a genius?

 

[Yuri_Enjoyer_Deluxe]

Me and my gang cheering on our little gangster

 

[DavidianMillerian]

sarcasm is fun

 

[Lindwyrm]

Karin is a massive hypocrite, apparently. She can show up to Nanase's school and tell everybody she's her predatory brother but they aren't even supposed to know when they're allowed to observe her? Nanase is not only a better person than Karin by miles, but also a better sibling by far.

 

[Apep23]

She’s the one who wants the charade but didn’t want to admit to it and the fact that the author did not having a gag at the end explaining things in the end shows how bad karin as a character

I thoroughly enjoyed this series still but karin’s attitude in this ch is a turn off

 

[495Go]

I understand Karin is dealing with some serious problem and that's why she made this pretend family to help her feel better or just vent, but the contrast with her really shy person on school is a little too much when you think how... bold she can be with Nanase-

 

[manabi]

She’s the one who wants the charade but didn’t want to admit to it and the fact that the author did not having a gag at the end explaining things in the end shows how bad karin as a character

I thoroughly enjoyed this series still but karin’s attitude in this ch is a turn off

I think she decided not to say anything because it's causing more chaos and she pretty clearly enjoys the chaos as well as having a pretend family. Doesn't make her any better, but does at least explain it.