Neplacus

About
Neplacus is a first class Devil responsible for sentencing Feliss to eternal forced devil reproduction. He is an immensely powerful being that is characterised by his muscular luminescent body and his curious choice of speech. His body also comprises of two gigantic golden snakes, wings and talons of a vulture, and beast-like hind legs.

Speech
Neplacus speaks in an encoded kana format. Follow the steps below to decode his sentences:
 * 1) Look up the hiragana of every katakana character in the sentence.
 * 2) Find the corresponding key on the kana keyboard, pictured below.
 * 3) Replace each character in the sentence with the corresponding English letter of that key on a QWERTY keyboard.
 * 4) Type the corresponding series of letters with any Japanese Romanji input.

E.g.「ト・ン・ナ・カ・ナ・キ・イ・ミ・ミ・ト・ナ・ス・ナ・ニ・カ・ニ・キ・チ・ク・ナ・チ・ミ・ミ・カ・イ・ニ・ノ・チ……」becomes 「syutugennsuruitigahuannteika……」. Typing this on a Japanese input gives「出現する位置が不安定化……」("Location of occurrence is not stable...").

This online script does steps 1 to 3.