Meguri fonts are combined fonts that use IPA and M+ fonts.

For developers:
If you want to generate Meguri font manually,
run them:
$ cp mplus-1m-medium.ttf script-meguri/
$ cp mplus-2m-medium.ttf script-meguri/
$ cp ipag.ttf script-meguri/

$ cd script-meguri/
$ ./fix-mplus-1m.pe
$ ./fix-mplus-2m.pe
$ ./import-mplus.pe

$ fontforge meguri*.ttf
Element => Font Info => General
Set "Underline Position" to -80.

If you want to generate Meguri-P font manually,
run them:
$ cp mplus-1c-medium.ttf script-meguri/
$ cp mplus-2c-medium.ttf script-meguri/
$ cp ipagp.ttf script-meguri/

$ cd script-meguri-p/
$ ./fix-mplus-1m.pe
$ ./fix-mplus-2m.pe
$ ./import-mplus.pe

$ fontforge meguri*.ttf
Element => Font Info => General
Set "Underline Position" to -80.
