Holy Fire Brigade Dynasite 999.9

(from ebookjapan):

In this near-future SF action work, Mellow, a beautiful woman committed to a new future for Earth, is portrayed by Leiji Matsumoto, well-known for "Galaxy Express 999" and considered a master of the SF manga world.

Mellow is sent from the planet Svan to restore the Earth, which has been affected by a mobile black hole, a cosmic ray shower, and danasite. Mellow lands on Nerima, Tokyo, where she meets Tetsuro Daiba and Dr. Moriki, and borrows the body of Dr. Moriki. Then the Trader Force, an armed group, appears and captures Mellow and Taiba...!