Thinking "Hellfire of ＴＨＥ ＥＮＤ" would be chuuni enough to be used as skillname.
Light novel is at ch 67, I can finish reading till latest before next update will come, but I think I like this manga because it's not serious and slime is cute.
*edit*
webnovel is easy to read, luckily not many...