If anyone is wondering what happens after...
Pure gets removed from the timeline but Akira still has memories of her though she only see's them in her dreams, Pure is now trying to get back to her but is struggling since Akira's brother has hired someone to give her false leads but his accomplice who is the lady that has time travel powers(or she did, as she lost them) and the time machine is based of her, she tells pure the truth and of Akira's location. She finds pure just in time to save her from scaffolding falling on her which you learn happened to her in the original timeline. In the original time line Akira was left paralyzed from the waste down and met Pure after saving her from being assaulted by this guy who spiked her drink. The two become close and Pure falls in love but Akira like when she was a kid is more close off & distant, not wanting to be in a romantic relationship, her condition is become worse too with her painkillers no longer working. It's at this point she discovers Akira's brothers time machine, hears of his plan to go back and stop his mum and dad from meeting, saving her from suffering but erasing him and his sister in the process. Not wanting that to happen and wanting Akira to not have to suffer and give up on her career, she goes back in time but the machine isn't 100% calibrated which is why her dreams of romance & marriage mix with her actual memories. Now it cuts back to her in hospital after saving her from the accident, luckily she only suffered minor injuries and Akira speaks with her brother who has had a change of heart due to finding messages written by their mother who wanted the dad to take care of the them and make sure they live happy lives which makes his stop his plan, he still hates did Dad obviously though. Pure wakes up and the two reunite properly, Akira says she loves pure and the two kiss. There is a time jump to them as adults getting married with their friends and family there, we also learn they both became teachers, Pure a kindergarten teacher and Akira a literature teacher for an old girls school, a few of her students attend the wedding as well. The wedding commences and they get married, it's very beautiful and sweet. There is an additional chapter afterwards, set when they are married and living together, deciding as to where they should go for their honeymoon. I may have missed out a few details here and there but that's the general gist of what happens after where it ends on Mangadex.
I don't condone it but if you really need to see what happens for your self due to the awful cliff-hanger, the rest of the story is available to read on Manganelo, otherwise you will have to purchase it, I was lucky enough to have a friend who already owned it.