That's exactly why I think that, if they genuinely want this series to have a good ending, Kodansha should kick Katsura Airi and the useless editor off the project and bring in a trustworthy writer to take over. They could point to the significant drop in Volume 13's sales after Chapter 135 was released as justification.
Then Chapter 136 could reveal that everything that happened at the end of Chapter 135 was just a dream, and finally let these idiots whose brains have been scrambled by Katsura Airi's writing actually sit down and talk things out like human beings.
As for the ending, it could be Shikura, Shifumi, or even have Chico turn all of them into clones and make them a harem