MTL - Cub Keeper - Chapter 18 come across

An infamous playboy, killed by a former lover, inexplicably awakens to discover himself transmigrated into a NTR manga, assuming the role of the antagonist - Alex Smith. Propelled by a mysterious system that magnifies his skill in captivating women, he holds the power to seduce the women that belong to the various “main characters“.

【Ding! The Queen of Hearts System has awakened.】

【Overall goal: Steal all the heroines from the various main characters across the world.】

【Reward: God Status.】

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This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

The entire globe has transmigrated overnight!

Starting from Hunter, Becoming a God at Level 100At level one, each attribute point increases by 1; at level two, each attribute point increases by 2; at level three, by 4…and at level ten, by 512.With every level, all attributes double. But at level 100, will he still be human?Lorraine wakes up to find himself transported into the world of Hunter x Hunter.Good news: he’s crossed over!Bad news: it’s a complete immersion.Good news: he has a system!Bad news: leveling up requires physical training.Good news: the system is powerful! Each level doubles his attributes, and at level 100, he’s granted godhood!Bad news: with each level, the experience needed also doubles.Thus, in the boundless worlds of existence, Lorraine embarks on his endless path to ascension.