Although living on water has so many inconveniences, because they are not living with Reimus, Marisas can be easier than living on the land, which is far better for them.Isn't making Reimu easy the meaning of Marisas' existenceeeeeeee!Not getting married is fine!
Just hand over Mister food nooooooooow!Yuuu...
In this case we have no choice but living on water now ze...In this way Marisas flee from Reimus and spent the rest of their lives on water.
That's the origin of aquatic Marisas.Yugiiiii!
We can't go back hooome!