Jingi wo Suberu Waka Kami-sama

-Jingi wo Suberu Waka Kami-sama ~Senshin no Isekai Harem Funtou Ki~
-神器を統べる若神様　～戦神の異世界ハーレム奮闘記～
-The Young God who Controls the Sacred Treasures ~Chronicles of the War God’s Other World Harem Efforts

Toujou Renya was taken captive by a certain God. When given two choices, to either die and be reincarnated as a dog, or use what seems like an infinite amount of time to surpass a God, he chose the latter.
Finally after hardships he managed to surpass the God and decided,
“Let’s go to another world and make a harem with this peerless cheat!”
Like that together with his lawful wife the Goddess Floria, War God Renya Isuhl introduces himself and the story of his other world journey begins. Breaking and setting up flags, a fantasy harem story of him making the women he encounters fall for him.
Creating abnormal sacred treasures, he wields them becoming unequal in war, and uses divine power to crush flags of misfortune.

Chapter 1 – Did you think it was the Final Boss? Too bad! It’s the Prologue
Chapter 2 – Birth of the Young War God

Seems that someone else is picking this up so it’s on hold for me. If he stops doing it then I’ll probably pick up where he left off.
http://erosworkshop.blogspot.com/p/young-god-weaponary.html
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Original Web Novel