MTL - On Her Lips - Chapter 128

Sam Sanderson is envied by many for his job, however he himself didn't seem to like it much.

Due to his expertise in nanotechnology he was tasked with monitoring the state the Valkyries, humanity's strongest weapons who all just happen to be made into gorgeous females.

Forbidden from even touching any of them, Sam spends his days in agony watching flowers he couldn't hope to touch. However one day all of that seemed to change.

I was betrayed. Slaughtered. Left to die by the people I trusted most — the women who loved me, and the hero I called a brother.But death wasn’t the end.Ten years before it all collapsed, I opened my eyes again. Same world. Same faces. But this time... I had a System.Not just any system — a Sex System bound to my very body. Each conquest fuels my power. Every ring I unlock grants me new skills.They thought I was weak. Disposable. Easy to manipulate.Now, I’ll corrupt them one by one.Not just for revenge... but for pleasure.Reincarnated with a Sex System. Bound by lust. Driven by vengeance.No one gets out untouched.

Kawaki, who was born in the dragon vein of a planet (Altana), first met Umibozu who was traveling in the universe, and his girlfriend, Kouka.Later, he came to Earth by accident and met the teacher who affected his life —Yoshida Shouyou.He also met a group of friends. The most conspicuous among the group of friends is a fool with silver hair and naturally curly hair, a short man with purple hair, and a little devil whose catchphrase is “Not Zura, it's Katsura!”Gintama Doujin, not transmigration.