Promise keeper [Diabolik lovers x reader]

•°The unclaimed that touched lives°•
(The name of the author is scrubbed off due to age)

The moon no longer concerns me,
But once, they mattered to thee.
The stars glow with a cool ambience,
But they cannot match my heart that is frozen silent.

We met, we loved,
You left me and flew above.
Is mortality what's keeping you away?
My love I would do anything to make you stay.
Your absence drives my immortal life crazy,
I search for you until my vision goes hazy.

Finally, I leave you alone.
I must atone for all the times I tried, I was stubborn.
Every time your life ends in the hands of these reckless feelings,
Means every scar on my heart for I cannot win against fate's dealings.

You shall find the path to forevermore,
Your life shall burn stronger than Earth's core.
Only then, I shall be permitted to keep you by my side,
Perhaps as my bride, my groom, or my light.

My dear, I know turning you (the poem faded beyond reading ability)

⚠️ WARNING: This fanfic is solely based on the anime as I have not played Diabolik lovers nor do I plan to due to difference in tastes but I want to attempt to make this palatable to those who may not like the sadistic side and controversial side of the game. I appreciate the original genre and it's creativity but there are some things I do not like but I won't go into detail or else it'll be too long.

P.S: I'm only doing this when I'm free so chapters might come out extremely slowly so ty for choosing this story.

Themes or things to expect:
-Gender Neutral Reader
-Reverse Harem (Characters x Reader)
-Spoiler but, Shapeshifter! Reader
-Age gap (Older! Reader and Characters/Older! Character x Reader)
-Sadism (from the anime)