Twins in Trouble
Another Rejuve Universe fic, this one also a Vocaloid fanfic!
Rin and Len Kagamine are master jewel thieves, planning their biggest scheme yet. But little do they know, the museum they've been targetting has new security...and a new law has been passed on what to do with criminals like them!
Warnings for age regression (mental AND physical), lots of spanking, tiiiiny hints of lolicon and shotacon, maybe romance later on...and more spanking.
(Note: I, the author, do NOT condone corporal punishment on children, nor do I support pedophilia. This is simply a work of fiction and should be addressed as such. Additionally, I don't own these characters, I'm simply a fan who wants to explore these lovely characters in this weird dynamic and setting.)