The Cuckoo's Fiance 1
There are some interesting parts in this new series, I think the most weak ones are the last pages which feel disconnected from all the previous ones, I hadn't read the oneshot, so after reading this chapter I had a look and I found out that those pages were introduced in the serialization. They were clearly added to immediately present the love interest of the main character, but I think they could have added in the second chapter without any problem.
There are many points in common with Nisekoi, starting from the blonde girl who seems already destinated to be the final girl. There is also a moment where the author jokes about it, making the main character asking the blonde girl if she belongs to a Yazuka family.
To sum up, I think we have the potential replacement of 5toubun (if it doesn't fail).