Blood Circulator (ブラッドサーキュレーター)

Before-I-knew-it, alone became, here (topic) where is

いつの間にか ('before I knew it / somehow without my noticing') is a fixed expression — uses the question marker か but isn't a question. The 間 ('interval') framing emphasizes the missed-time feeling.

Eternity's whereabouts (object) softly tracing

ありか (literally 'place where it exists') is a literary noun for 'whereabouts'. Pairs with 探す, 知る, 辿る. 探しありか ('its location / where it lies') has a poetic, almost detective-fiction sound.

Sigh about (size of), lined-up ended-up

並ぶ ('to line up') = the action of forming a queue/row. With 〜てしまう ('end up doing') the result feels involuntary — sighs piled up against the speaker's wishes.

Passion burned that-time (object)

情熱を燃やす ('to burn passion') is a fixed J-pop combination — 燃やす is the transitive partner of 燃える ('to burn'). Pair: 心を燃やす ('burn one's heart').

Fresh-blood pouring, take-back (it.is)

Verb stem + 戻す ('return / take back'): 取り戻す ('reclaim'), 思い戻す ('recall'), 連れ戻す ('bring back'). The image of 'pouring blood into the days' frames vitality as transfusion.

Passion if-pour, this days also, throw-away to-the-extent not-broken probably

Throbbing heart (subject) ache if, fixed-notion smash-through (it.is)

ジンジン is a mimetic adverb for throbbing pain — the kind you feel after smashing your finger or after a hard hit. Concrete and sound-symbolic.

Eternity, months-days (topic) circle but, throw-away for-purpose darkness shallow probably

月日 (literally 'months and days') is a literary expression for 'time / years passing'. 月日が経つ ('time passes') is a stock phrase. 浅い ('shallow') used metaphorically for time/depth — the night/darkness isn't deep enough yet.

Hope (object) don't-throw-away

Verb-negative + で is the soft prohibition: 'please don't do X'. Less harsh than 〜な ('don't!'). The bridge of this song stacks five of these in a row — a famous J-rock cascade of pleas.

Alone (means), don't-cry

Continuing the chain of negative imperatives. The same rhythm — verb-negative-で — repeats across five lines. A common J-rock device: stacking parallel structures.

Body (object) don't-wound

傷つける ('to wound') is the transitive partner of 傷つく ('be wounded'). Used physically and emotionally — 心を傷つける ('hurt someone's feelings'), 身体を傷つける ('harm one's body').

Love in, don't-drown

溺れる ('drown') is used both literally (water) and metaphorically (溺愛 'doting / smothering love', お酒に溺れる 'drown in alcohol / become addicted'). 愛に溺れる = lose oneself in love.

Hatred don't-accumulate

溜める ('to accumulate / save up') for liquid (お金を溜める 'save money'), patience (我慢を溜める), grudges (憎しみを溜める). The chain of five 〜ないで sentences peaks here on the most psychologically destructive option.

Please turn-around, please you (vocative)

どうか ('please / I beg you') is a more imploring 'please' than 〜てください. Used for serious pleas, formal letters, or song lyrics. The vocative 君よ ('O you!') has classical/poetic weight.

Passion burned that-time (object), fresh-blood pouring, take-back

Love (object) share-mutually if, this days also

Verb stem + 合う ('do mutually'): 分け合う ('share with each other'), 助け合う ('help each other'), 愛し合う ('love each other'). The conditional 〜えば form gives 'if we share...' — left unfinished, the implication is 'will be okay'.