本当はもうちょっと複雑な状況でしたが、説明がめんどくさいので簡略化しました。
もちろん立て替えてるだけですよ！(笑)

The situation was actually a bit more complicated, but explaining it would be a pain, so I simplified it.

Naturally, I was only paying what would be reimbursed! :-)