A so-called plot hole novel is a work where the author sets up countless backstory clues and hidden threads, but for one reason or another, never gets around to resolving them. More specifically, these can be divided into several types: the delayed-update hole, such as Dragon Raja and Erementar Gerad, which never get a sequel; the abandoned hole, such as Witch on the Holy Night and Zero no Tsukaima, which simply stop; and the endless-chain hole, such as Trails, Trails, and more Trails, where one hole is barely closed before another opens.
And the world of plot hole novels is a forbidden zone for transmigrators, because the plot you know could go off the rails at any moment, and the characters you know might turn out to be master actors (the Trails acting phenomenon).
None of the above actually has anything to do with the story. This is just a travel journal about a newlywed couple's honeymoon. Yes, just pretend it's real.