Anime Crossover: Heart of Steel, Gain a Billion HP by Taking Hits!

After transmigrating into a crossover world, Gongyang Zhen gets bound to a League of Legends champion template: Dr. Mundo, the Madman of Zaun. From the start, he comes with the Mythic item Heartsteel.

Its passive effect is simple and brutal: stay close to an enemy for three seconds, and your next punch deals bonus damage based on your maximum health while permanently stacking more health. There is no cap. In his first fight at an underground Tokyo boxing ring, his opponent lands a spinning backfist square on his face, but his health bar drops by less than one percent. Gongyang Zhen counters with a single punch, breaking three of Blackback Jackal's ribs and forcing him to surrender on the spot. After the match, the System displays a quest: Steel Your Heart. Stack Heartsteel to 400, then multiply the stacks by five. Gongyang Zhen glances at the progress on his panel, 24/400, and the very next day he heads to the Glory Boxing Gym.

Uehara Nana is still debating whether to arrange a real fight for him when a photo on the wall makes his pupils contract: Gaolang Wongsawat, the Thai God of War, a four-time heavyweight boxing champion who competed in Kengan Association tournaments after retiring. Gongyang Zhen looks away and tightens his hand wraps. "Send him in. I'll take him on."

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.