in short
in a few words
His novels belong to a great but vanished age. They are, in short, old-fashioned.
e.g.
/fe3hdialogue/逃亡中の盗賊団 The Fugitive Bandits#62d22435bdb0e50000ccb409
/fe3hdialogue/荒廃した修道院/銀雪 The Fallen Monastery (Silver Snow)#63798011bdb0e5000035a4b0
/fe3hdialogue/Claude×Marianne#63b33eafbdb0e500003a1a69