Ultraman: I Became the Strongest Leonicus Through Gacha Luck

Transmigrated into the Ultraman universe with a mysterious gacha system, our protagonist discovers he can summon legendary monsters through blind boxes. Each pull brings new creatures, powers, and possibilities. As he collects an army of beasts and unlocks hidden abilities, he rises to become the ultimate Leonicus—a master of monsters feared across galaxies. But with great power comes dangerous enemies, and the fate of multiple worlds may rest on his gacha luck.