He always acts according to his own maxim.

There is no ergative in Japanese.

Japanese is a language with few declensions.

There is no oblique case in Japanese.

Where is Kakushu?

He is deeply studying the concept of hypostasis in theology.

What is the price of this product?

Kakuro is my best friend.

He passed the book to me.

In Finnish, the adessive case is used to express location and time.