Delta: Specialty Items Wholesaler

[No heroine, complex composition, more professional military description, more private settings] [The protagonist doesn't have emotional scenes, but the protagonist's sister does! Delta has come to the world. Some items in it have special effects, while others have no special effects. But his arrival changed everything! Totem arrows useless? Use it to pierce your body, you will either die or get a substitute! Pocket watch just tells time? Talk to me about time stop and go! What does it mean to turn a musket into an ancestral launcher? What is Origin Stone Skill? For a time, all kinds of strange things appeared in the war zone. What does Platinum Star fight with Purple Hermit? What does it mean to have Vishdel standing on the launch bridge? At this time, Hajiye, who blocked the bridge with [Exploding Dawn], scratched his head "I don't make it"