うっとうしい梅雨期に、すっきりしない話で恐縮ですが、少しの間お付き合いください。

I'm ashamed to tell such a muddled story in this dreary, rainy season, but please bear with me for a while.

今後とも、お付き合いのほどよろしくお願いします。

We look forward to working more closely with you in the future.