Zero no Tsukaima, Kono Subarashii Sekai ni Shukufuku wo! Recommendations
*Both series involve a human male lead being summoned/reincarnated to an alternate fantasy world...
* Both female leads (Aqua & Louise) have an amazing abusive personality...
* Both have Harem/Comedy combo ( the shows themselves proves that this combination is awesome )
*Both have Mages/Dragons/Swordsmans/Spells ( a so called RPG feel in them )
KonoSuba and Zero no Tsukaima.
Both series involves a Japanese boy who is transported into a fantasy world, because of a girl who is seen as useless. Both should use their differences to solve their lives within it and rid of the dangers that may come, even if only her see him as a servant. Two series full of fanservice and partial action, with comedy of things that can be misinterpreted.
Both revolve around a main character that is plunged into a fantasy worlds with magic in them.
In this world the main character learns to live in this new environment.
In Outbreak Company the MC is treated as a guest while in Zero no Tsukaima the MC is treated sort of like a slave.