American Comics: My Iron Man Brother Is Also Superman

Leon, who traveled to the Marvel world, was adopted by Howard Stark and became Tony's younger brother. On his eighteenth birthday, he awakened his Kryptonian physique and the ability to travel through time and space, and since then he has been rapidly moving forward on the road to becoming stronger. Tony: Oh my god, you can become stronger just by basking in the sun, and you plan to learn magic? Oh! What's this? Chinese kung fu that grows a planet inside your body? Superman: We are both Kryptonians, but I always feel like I have been living in Leon's shadow! Batman: Damn it! He destroyed all my kryptonite before I could even shoot! When the villains mass-produced kryptonite missiles and prepared to attack Leon, Leon flew outside the earth, held up the planet with one hand, and tossed it up and down easily. "I'm still not strong enough, so I have to find another world to retreat. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.