In order to deal with Sogo Doma and snatch back the account book from him, Yukino Yukinoshita put in a great deal of effort. She had managed to persist every day in observing a slacker who was either sleeping in class or chatting with someone, and she had even written observation notes. That perseverance alone was beyond what ordinary people could manage...
Although it seemed utterly useless, it was the only thing she could do based on her own assumptions. After all, in the second daughter's misinformed understanding, Sogo Doma had gotten hold of her family's account book. Given how terrible he was, the possibility of getting it back through negotiations was practically zero—
If negotiations could have worked, her father, mother, or sister would have already negotiated with him. Though she hated to admit it, her negotiating ability really was inferior to everyone else's. So all she could do was observe him, find his weaknesses and openings, defeat him using those, and then seize an opportunity to take back the account book!
The ideal was plump, but reality was skinny. Finding a slacker's weaknesses and openings was no ordinary task. Of course, that was not to say he had no openings at all—it was just that there were far too many, and none of them were enough to deal a fatal blow. Sleeping in class, for example, counted as an opening, right? But what use was such an opening?
Disrupting classroom discipline? That was useless too...
Skipping class? Umm... She was trying to defeat him, not pick a fight!
Being involved with so many girls in the class? Like Shiina, and that big-breasted—cough, cough... Kasumigaoka. Kasumigaoka often had lunch with Sogo Doma, and Tamaki would also join his little chat circle during breaks. If she made use of that...