For all the modern Shining:
-the Race (beastmen, centaur, dwarves...)
-The Ancient race (with the Eye design as an obsession in all their creation)
In Shining Tears:
-Yoghurt is in the game as a transformation
-there is a centaur named Arthur
-the name of the fairy with Cupido is the same that the named of one of the pixie from Holy Ark
-The realm were the game happen is named Shildia, it's a mistranslation of Shieldia(it was a reference of Guardiana)
-the name of Blanc neige is Gardenias, it's a mistranslation of Guardiana(And it's said in the game that people of Runevale, her kingdom came from another continent long time ago)
Sakuya is named Maxima here, Maxima mean in Japanese "Max of now", the developer of the game said it's a title given to the Leader of the Shining force in honor of Max
-there is Dark Dragon (even if his design is different) and he was already sealed 1000 years ago (and maybe 1000 years ago before)
-There is a kid named Julian
-The group is the Shining force (it's said it's the name given the group fighting Dark Dragon)
-it's suggested there is other continent that the 2 seen in the game.
-there is Adam in an ancient ruinspoil because it's spoil event from late in the game
Actually, it's possible to assume the modern Shining storyline are set few time before Holy Ark (and nearly in same time for Ark) but on another continent.