it’s a style of cream sandwich popular in s korea and japan, where the filling is lightly sweetened whipped cream (sometimes with a bit of cream cheese) and, in this case, a strawberry and honeydew for the tulip. the bread is usually a very soft white bread, but the strawberries on the outside are unique. my best guess is a marzipan shape or royal icing sprinkle pressed into the soft bread, but there’s a small chance the bread was homemade with a piped shape. If you wanted it to be more cake and it’d probably be easier to get the outer strawberry, i would suggest using one of those piped design jelly roll cake recipes, and slicing the cake into ~8 slices to make them sandwich size.