Anime / Manga - "I'm indebted to you as an intern from today... Oh!"

Original text for the pic:
「本日からインターンでお世話になりま……あっ！！この間助けてくれたお兄さんだ！！」
TL: "I'll be in your care here as an intern in Japan from now o-- Ah, it's the guy who helped me the other day!"

Context: On going series of one-shot pics. From my understanding, OL girl in the back has feelings for the senpai at work. They were at the pool, when this foreign girl tripped and fell onto the senpai. Obviously, OL girl was livid. And now it turns out the foreigner will be interning at that same place, and is getting too friendly with senpai >:(.