Copihan: Urino to Ryooma no Gougai desu yo! - Recommendations

• Vol: 1
• 1992

Student/hacker Konami purchases a cordless phone from a door-to-door salesman and finds that it possesses the power to transcend space and time.

• Vol: 3
• 1969

• Vol: 2; Ch: 19
• 2013 - 2015

• Vol: 5
• 1998

• Vol: 5
• 2007 - 2013

• Vol: 2; Ch: 32
• 2016 - 2017

• Vol: 1; Ch: 9
• 2019

• Vol: 6
• 1997 - 2000

The pudding empire's home planet only has a lifespan left of one year. Thus, they aim to invade Earth and make it their own... but first they've got to wipe out those annoying humans who are currently inhabiting the planet. Planning an invasion turns out to be much easier said than done, especially when your human-killing monsters start having problems with morale, sickness, family issues, and so forth...

• Vol: 1
• 2002

The last of the Pinch tribe, Pinchy travels through the stars in search of treasures left behind by her ancestors, and it's never an easy hunt. But one thing is for certain, it's always hilarious.

• Vol: 12
• 1991 - 1998

The hero is Dr. Kishiwada, a brilliant but demented scientist, who creates bizarre mechas, battles the forces of evil, or just mucks about.