Pertinacia

==Background==
"pertinacia" is an original GUMI song composed by phantasmis. It is their fourth Vocaloid song.
==Lyrics==
I should have known better
That this day would come
I should have known better
That life would come undone
I've given all I own
To protect you
Now I only know
That I don't know what to do
I'll do better this time
You will be safe
From the danger
That you have made
If you could only see
What you have caused
Destruction everywhere
Raining from above
I've given all I own
To protect you
Now I only know
That I don't know what to do
I'll do better this time
You will be safe
From the danger
That you have made
I'll still stand by you
Even though you won't even know
I'll do better this time
You will be safe
From the danger
That you have made
==Trivia==
*According to the producer, "devotio" was the original name of the song.
==External links==
===Official===
===Unofficial===
Category:Original songs
Category:English songs
Category:Songs featuring GUMI