His red string still not connected and will never connect to kauru because he is a string cutter the story shows that the fate is not every thing you can be in love even if you are not fated for each other. Thats why haru asked him to cut his string if his fated one was found. In the second book when the one who can see the red strings hire kouru to help him cut his string kouru told him that theres a lot of people who did cut their fated one string because the didn’t want them he didn’t say that in words but this is what i get of the conversation between them so i thing that it’s alright to haru and kouru continue their life just like this and continue being happy in love .
What? where’s the red string??????