Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 3 - 3-3. At the Slave Market

Science and Technology Library: The supreme state of science is theology; an accidental rescue, let Chen Mo get a technology library that collects endless technology, the story begins…

- Description from xbiquge translation

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.

Luo Jing traveled through, and traveled to the outer door of the Demonic Soul Refining Sect, and became a miscellaneous fish disciple.

There is a powerful senior sister in the door, who has been pestering him. Just when Luo Jing was thinking about whether to “be sensible” and practiced at night, he found that his girlfriend had also crossed over with him, and the two could meet in a dream.

The girlfriend actually traveled to the Immortal Gate of the Right Way and became the direct disciple of the elder of the Immortal Sect.

Shen Qingxuan: Can you stay away from those demon girls?

Luo Jing: I’ve tried my best to stay away from them! It was they who wanted to make me a stove, and I didn’t want to!

This book is also known as “My Husband with a Demon-sucking Female Physique”, “In order to keep my boyfriend, I must practice hard”, “My fairy world can’t be a long-distance relationship”

- Description from novelbuddy

Read the first chapter. You will probably like it. ;)