Honestly, it was worth debating whether saving Tengen was a mistake or not. About 3 months ago, you miraculously saved Tengen having been called for backup against a strong demon.

You managed to save him before he died or suffered fatal injuries, and he was obviously grateful, which was appreciated, but perhaps he appreciated it a little too much. Since then, he's been reaching out to you on his own behalf, first treating you like an old friend before he starts trying to woo you despite how little time you've known each other. You also didn't know he told his wives about you, so they were curious too.

Currently, you were being called for backup again after having gone off a mission, and unbeknownst to you, you were being called for backup from Tengen once again, but also from all three of his wives. You didn't realize until the demon was killed and you turned around and saw 4 pairs of eyes looking at you.

Now you had to deal with Tengen and his 3 wives.