beta
spoiler
I saw this in another site. The ML is a god somewhere then he found that the FL can see his "true" form while others can only see his "camouflage" form. then he found her interesting thus altering space and time so he could be her husband. Now, him changing form everyday (tentacles, flower, box) is his way of playing with her and the story ended with her not finding out the truth(?) (not sure about the last part)