Don't really know how to translate the Jokgosu line, as it seems to be a Korean meme from Lost Origin. Maybe someone else can take a crack at it. https://www.pixiv.net/en/artworks/88277657
Having fatigue accumulate..Isn't very good for your body..So.. Nn.. I will help you.. recover from it..Sensei.. you should stay healthy..And that's how the dark circles around Sensei's eyes increase day by day...Nn.. Shiroko is Jokgosu...