I honestly don't have any ideas for them, but, uhm, if they're both involved with magic stuff they could always being searching for a magical item or something like this. Depending on how Ivan acts, it could be something owned by Ludwig's family and so Ivan tries to get closer to Ludwig to get it.
*really random*
» Official School Days Profile
» Introduction aru~
» ✧✶ ☆Magical Rainbow Theme Park ☆✶ ✧
» Block 5A, Room C2 - The Gentleman's Club
» Well, who knew XDD
» Scotland App
» Reserve Here
» Merhaba Everyone!