Cheat Kusushi no Slow Life: Isekai ni Tsukurou Drugstore

Synopsis

"Stuck-In-Place Super Glue": Noela breaks Mina’s kitchen knife. Paula, the tool seller, is exhausted as she has hundreds of items to repair. Her latest project is Annabelle’s broken gauntlets that resist all attempts at repair and she angrily wishes a liquid existed that could stick broken things together. Reiji invents Stuck-In-Place-Super-Glue which Paula uses to make repairs much faster. Unfortunately Noela gets glue on her hands and ends up stuck to Reiji. To avoid having to shower or sleep together Reiji invents Stuck-No-More-Releasing-Agent to melt the glue. Paula is able to go to bed on time and pays Reiji an exorbitant fee as thanks.

"Glossy Shine Polish": Paula complains that adventurers never buy anything from her shop. Reiji reveals her shop is so dark even her highest quality weapons look like rusty antiques. After cleaning her shop Reiji notices all Paula’s weapons and armour are dull and scratched, so he invents Glossy-Shine-Polish and Paula soon has all her merchandise gleaming and shiny. Unfortunately, adventurers do not often visit their village so she still doesn’t manage to sell anything. Elsewhere, it is revealed Demon King Ejil has become addicted to Reiji’s energy potion and when his servants are unable to bring him enough he decides to get more himself.

(Source: Wikipedia)