Immortal Rain

Immortal Rain is the name of the the manga started in 1999 by Kaori Ozaki.

Synopsis
Machika Balfaltin is an assassin and the granddaughter of the Legendary Assassin Zol, the Grim Reaper. The only bounty Zol couldn't obtain is the immortal Methuselah.

Publication History
Meteor Methuselah was originally published in Sauce starting in 1999.

It was moved to Wings in 2002 when Sauce merged with wings.

It became a monthly publication some time in 2003.

Translation History
Immortal Rain has been translated into multiple languages.

Only The first 8 volumes have been published officially in English due to Tokyo Pop going under.