Please tell me how to leave the leading space in the paragraph of iText7.

I solved myself by referring to the following.

Is there any way to keep spaces before text in iText7?
https://stackoverflow.com/questions/46970739/is-there-any-way-to-keep-whitespaces-before-text-in-itext7

By adding NULL characters to the front of the paragraph, we were able to prevent the left trim.
For NULL, "\u0000" is garbled, so I chose "\u00a0".

Before: Parograph p = new Parograph(line).setFont(font);
After modification: Parograph p=newParagram().add("\u00a0").add(line).setFont(font);

However, depending on the font you use, the file will be corrupted.

OK: PdfFont=PdfFontFontFactory.createFont("migu-1m-regular.ttf", "Identity-H";
NG: PdfFont=PdfFontFactory.createFont("HeiseiKakuGo-W5", "UniJIS-UCS2-H";