From English Wikipedia and Japanese Wikipedia:
Eighting Co., Ltd. (also called 8ing) is a Japanese video game company founded on March 15, 1993, mainly consisting of staff from Compile. In October 2000, they merged with the companies Logic and Magic and Eighting's brother company Raizing.
In 2005, they emerged on the MOTHERS Stock market.
They used to put their focus on arcade games but have of late instead concentrated on mobile phone apps and games for home systems. They are specifically famous for their anime fighting games for home systems, like Naruto, Gashbell, and Bleach.