Tatsumoto
This article addresses common questions about typing with Fcitx.
To enter anything when using Fcitx, type what you want to type and then press the space bar. Fcitx will provide predictions for the characters you intend to insert. If the prediction is incorrect, continue pressing the space bar until you find the correct one.
Main article: How to type in Japanese
Ever wondered how Japanese people type? No one knows the answer. Some people say that they use huge keyboards with hundreds of keys like on the picture. Luckily for us, we don't have to imitate Japanese people and buy a keyboard like that. There are programs called Input Method Editors (IMEs) that help us do the same thing on a regular computer keyboard. With an IME you type Latin letters and the software automatically converts them to Japanese characters.
Typing words in a dictionary, searching the web or talking to people who pretend to be Japanese on the Internet all require being able to input Japanese characters. If you're serious about learning Japanese, you need to learn how to do it.