Yea I also understood it as that it was intended for Seth originally but Seth gave it to Nepthys without even looking at it (cause he would have given anything to her) but in the end that bewitched her instead so Osiris kind of remade his plans then and there
I think that was his master plan as well, but the tiger lady made sure it didn't go as he liked. Through this whole story you can tell how manipulative he is and how he plans to get his way by any means necessary.
I guess our lion goddess thought Osiris wouldn't want to get it on with Nephthys... not expecting him to YET AGAIN use an unforseen development in his favor.
If I get it right, was Osiris already hoping Seth to steal the mirror and look into it, so the tricked mirror would show Osiris anyway and Seth would be in love with Osiris? But it was Nepthys who looked into the mirror but it worked in Osiris’ favor at the end anyway. Or idk can Osiris guess about Seth stealing the mirror and gifting it to Nepthys?? Did anyone understand my question lmao the talk in chp173 made me feel like the mirror was aimed for Seth