Insectduel is one of the first SMB2 Japanese ROM-Hackers and second of Super Mario All-Stars hacker. He hacks SMB1 and SMB3 for Super Mario All-Stars for Super NES and sometimes edits other NES games. However, he had planned to hack a few NES Megaman hacks such as Megagirl another fight story.
He recently modified M.K.S SMB Utility the English version to create another utility that supports SMB2 Japanese ROM-hackers called ISD SMB Util which is similar to SMB Software's Item SMB2 Japanese.
Also note that Insectduel will translate his favorite manga which is a video game called Hana Yori Dango another love story which is made by Yoko Kamio.