Ultraman: Good Grief! My Monsters Can Use Forbidden Arts?

After transmigrating into another world, Sena becomes Zero's older brother. He has not inherited any of his father Seven's Red Tribe bloodline, making him a frail Blue Tribe member through and through.

He thought he could only become a scientist, but then he awakened the Monster Forbidden Arts Master Breeding System!

It can summon random monsters and even let them draw skills!

Sena receives ten-thousandfold critical-hit returns!

Ding! Tyrant Beast draws Ultraman Ace's Guillotine! Critical-hit upgrade: Cosmo Miracle Ray!

Watching Tyrant Beast unleash the wild forbidden art, Guillotine, Ace's mouth twitches uncontrollably!

Ding! Five King draws the Gamma Illusion of the Three Heroes! Critical-hit upgrade: Saga Gamma Illusion!

Tiga, Dyna, and Gaia stare at Five King, which has summoned illusions just as powerful as they are, and begin questioning their own existence!

Ding! Gatanothor draws Glittering Zeperion Ray! Critical-hit upgrade: Glitter Form!

Tiga: "???"

The entire universe's tone of events begins to go completely haywire!

Zero, looking thrilled: "Big brother, let's kill Tartarus!!"

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.