From FoOlRulez:
Hiraga Saito was summoned to the wonderful world of Halkeginia through the use of magic. He was summoned by the very cute, yet with "Zero" magical ability, Louise. Although it was an accident, Saito was summoned during the summoning ceremony, and sealed the agreement to become Louise's "Familiar" through a kiss. That is how he arrived in this world.
While on…
HIGA Yukari
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Six years after the JS Incident, a young dimensional traveler Touma Avenir rescues a mysterious mute girl named Lily Strosek from a secret research facility on a distant world of Ruwella. However, by doing so, he becomes an unwitting accomplice in the Book of the Silver Cross Incident, the latest interdimensional crisis faced by the former Riot Force 6 members...
From Operation Boredom:
During an eclipse, demon Lord Exoda. C. Crown was revived. He is supposed to bring chaos and destruction to the world. The world is panicking, and as a sacrifice to the demon lord, they decide to send 1,000 girls to the demonic island, Shina Dark. However, in Shina Dark, all the legends are lies. Exoda does not sleep with 10 girls a night, and keep the…