... 前に => Before ... N4
Relationship before and after
... 前に => ... in front of, before N4
Relationship before and after
前に => before; in front of ~ N5
気味 => -like; -looking; -looked; tending to ~ N2
を前提に => On the premise of N1
Premise
に気がつく => to notice; to realize N4
手前 => considering; before; in front of; one’s standpoint N1
気にもならない => it's no use; can't do N1
Evaluate
~[前「まえ」]に => Before N/Vる(occurs/happens) N5
Time
当然だ/当たり前だ => natural; as a matter of course N2
[気味「きみ」]だ => Like A, Looking like A (is happening) N2
Adjectival, Descriptions
一気に => in one go; without stopping; all at once; immediately; instantly; right away ~ N2