Monster Paradise - Chapter 1849: Conversation With the Bug Horde’s Will

Corporate slave Reiji went to another world one day, made one rank higher potions, and li~ghtly made a killer profit!

He used that money to open a drug store, and troubled people who heard the rumors came over…

Eyedrops for an elf troubled over his failing bow aim!

Cough syrup for the dragon that unintentionally releases his dragon breath!

Reiji makes medicine for troubled people, enjoying his leisurely slow life in a rural city.

Gou Liang travels through worlds in order to complete a mysterious and arduous mission…

16 worlds in total:

School Campus: Strawberry Flavored Scholar Gong √
Entertainment circle: Lemon Flavored Film Emperor Gong √
Ancient Time: Honey Tangerine Flavored Shadow Guard Gong √
WuXia: Melon Flavored Senior Brother √
Beastmen: Pineapple flavored Beastmen Gong √
Ghost Spirits: Snow Pear Flavored Dead Gong √
Ancient Time: Gr*pe Flavored Regent Gong √
Apocalypse: Banana Flavored Boss Gong √
Interstellar: Pomegranate Flavored Sentinel Gong √
Modern: Citrus Flavored Aristocrat Gong √
Mecha: Sweet Jujube flavored Lunar New Year Gong √
Ancient Time: Durian Flavored Battle God Gong √
Magic: Watermelon Flavored Blacken Gong √
Cultivation: Cherry Flavored Disciple Gong √
Fantasy: Blueberry Flavored Demon King Gong √
Celestial World: Bayberry flavored Senior Immortal Gong √

- Description from Novelupdates

With A Tale of Blades & Blood, the world of Avalion takes shape in the form of an all too familiar world. Filled with morals either clear or grey, war is inevitable while peace never lasts. Fifteen centuries of watchful peace and subtle tension have finally boiled, and the conflict rises once more, now filled with more bloodshed than ever before.Beyond the mountains of the Nortenhein, the Weslands arm themselves to take back their lands and bring forth to the south and the east A Bloody Winter. To the east, over hills and through forests of old and past the waters of the Red River, The East Plains stand tall with the Spire as its center, ready to fulfill their Dream of Vengeance. Deep in the south where the cities stand and to the west where the walls never crumble, steel meets steel as brother fights brother in A Dance of Fire and Swords.Witness the adventures of Orevian Ballister, Norien Ravenhan, Forien Strix, and Loran Aelond as they face battles of wits, blades, honor, glory, and tragedy in a story that shall never be forgotten:A Tale of Blades & Blood.

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.