Check translation on note #2273643. I'm not certain that the phrase "目覚めが悪くなる" doesn't have some kind of slang meaning besides "wakings getting worse".
Feels like I kinda get the joke, but at the same time not really.
Reizei-san!Sodoko-san & Reizei-san #3You're always late and skipping classes!Sorry about worrying you.Ah...*BLUSH*If you get held back, my morning wakings will get worse!You're out of credits.Don't you know you'll be held back!Thanks, Sodoko.I'm not telling you this for your sake you know!*BAM!*Don't say such strange things!It's regrettable but I don't have such hobbies.Sorry.*FLUSTER*
*FLUSTER*I do not!