Help with Synopsis/Overview of various LNs

[obnuchious]

As of late, I've been obtaining various Light Novels and since I have yet to understand the japanese language, I was wondering if there would be anyone willing to help me know what the LN titles I've obtained are all about.

Here are some of the titles:
Gedou Ouji no Lemegeton
Shiina Machi senpai no anzenbi
Isekai Igan no Travelogue
Akihabara Dungeon Bouken Kitan
RIGHT∞LIGHT
Nanase Kourei Gakuen no Akuma
Boku to Kanojo to Kanojo to Kanojo
Seikentsukai no World Break