Nothing to warn about.
Just Keep Going
Jo could no longer lie to himself: he was awful at studying. He had to work much harder than others to get results that were still weaker than average.
Giving up, however, was not an option. He had promised Sora a large house far away from the city for the two of them and that won't pay for itself, now will it?
No matter how many sleepless nights and how much despair about mediocre grades it would take: he would get it done, get a good degree and job somehow, just like he promised. Just keep going. Just keep going!