Is it Japanese to put a bookcase behind the sofa in the small living room?

There is a backer behind you, so you will be more confident in doing things, so you should also have a backer behind the chair or sofa, so you won't have worries. Because backing behind will give people a feeling of stability and security, but if not, you can also choose plants and bookcases with good meanings as screens, which is also a kind of backing. Therefore, the bookcase behind the sofa has good feng shui and can keep money.