Kyoukai Senjou no Horizon - Volume 4B, Chapter 46: Reunited One in a Heated Garden

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.

Swordmaster Karyl MacGovern.

He returned to the past, wanting to rewrite the future he was unable to change with his sword alone. And this time, he would acquire the power that once eluded him—magic.

This time, he would master both sword and magic, and stand on the peak.

This is a story of an ordinary otaku crossing Sun Wukong in “Dragon Ball”; this is an invincible YY novel, there are many worlds, many girls!

Leisure, entertainment, round your dreams. Solemnly declare: This is an invincible stream yy novel, there are many heroines, do n’t like it! !! !! (This story and the characters are purely fictitious.

- Description from Shukeba