This is a masterpiece in my opinion, the complexity in mc and realisation of ml was good but very rushed

The whole concept of this story was mc surviving and escaping and reaching above ground but once they reaches the above ground it just ends?? Since they were talking so much about above ground in starting halfway chapters, we as readers were quite curious once mc reach and start living in the above ground , what he's gonna do and daily life with ml??but it's just ended??its like there more chapters to it and we didn't even get to know pink hair and idk couple relationship more??but in reality there's no chapters left ,no side stories and ended just like that ಥ_ಥ