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(いち)(ねん)月日(つきひ)(めぐ)り、偶然(ぐうぜん)出会(であ)った(きみ)(むね)高鳴(たかな)(あたら)しい関係(かんけい)(ねが)(うた)

As a year passes, the song expresses excitement about meeting you by chance and wishing for a new relationship.
82 words
(いち)(ねん)月日(つきひ)(めぐ)

(いち)(ねん)

N5
n
one year; some time ago

N5
prt
indicates possessive(occasionally ん, orig. written 乃 or 之)
prt
nominalizes verbs and adjectives

(つき)()

N3
n
time; years; days; (one's) life
n
the Moon and the Sun

N5
prt
indicates sentence subject (occasionally object)
prt
indicates possessive (esp. in literary expressions)

(めぐ)

N2
v5r, vi
to go around; to make a circle around
v5r, vi
to surround; to circle; to enclose
また7(つき)

また

N3
adv
again; once more; once again; another time; some other time
adv
also; too; as well; likewise

7(しち)(がつ)

N3
偶然(ぐうぜん)出会(であ)えた

(ぐう)(ぜん)

N3
n, adj-na, adj-no
coincidence; chance; accident; fortuity
adv
by chance; unexpectedly; accidentally

()()えた

N3
v5u, vi
to meet (by chance); to come across; to run across; to encounter; to happen upon(出遭う usu. has a negative connotation)
v5u, vi
to meet (e.g. of rivers, highways, etc.)(esp. 出合う)
Yeah, (きみ)(ぼく)()づいて

(きみ)

N4
pn
you; buddy; pal(sometimes considered male language; referring to someone of equal or lower status)
n
monarch; ruler; sovereign; (one's) master(orig. meaning)

N5
prt
indicates sentence subject (occasionally object)
prt
indicates possessive (esp. in literary expressions)

(ぼく)

N5
pn
I; me
pn
you(when addressing a young boy)

N5
prt
at (place, time); in; on; during
prt
to (direction, state); toward; into

()づいて

N3
v5k, vi
to notice; to realize; to realise; to become aware (of); to perceive; to sense; to suspect
vi, v5k
to regain consciousness; to come to (one's senses); to come round
(むね)おどるのはなぜ

(むね)おどる

N2
adj-f
heart-pounding; exciting; thrilling; heartrending
v5r
to have one's heart pound; to be thrilled

N5
prt
indicates possessive(occasionally ん, orig. written 乃 or 之)
prt
nominalizes verbs and adjectives

N5
prt
indicates sentence topic(pronounced わ in modern Japanese)
prt
indicates contrast with another option (stated or unstated)

なぜ

N5
adv
why; how
雑踏(ざっとう)(なか) (きみ)だけが()える

(ざっ)(とう)

N3
adj-no, vi, vs, n
hustle and bustle; throng; crowd; congestion; traffic jam

N5
prt
indicates possessive(occasionally ん, orig. written 乃 or 之)
prt
nominalizes verbs and adjectives

(じゅう)

N3
suf
(all) through (e.g. the night); throughout (e.g. the year); all ... long
suf
within (e.g. the week); in the course of (e.g. today); by the end of(as 〜に)

(きみ)

N4
pn
you; buddy; pal(sometimes considered male language; referring to someone of equal or lower status)
n
monarch; ruler; sovereign; (one's) master(orig. meaning)

だけ

N5
prt
only; just; merely; simply; no more than; nothing but; alone
prt
as much as; to the extent of; enough to

N5
prt
indicates sentence subject (occasionally object)
prt
indicates possessive (esp. in literary expressions)

()える

N4
v1, vi
to be seen; to be visible; to be in sight
v1, vi
to look; to seem; to appear
(はじ)めて()うみたいだね

(はじ)めて

N3
adv, adj-no
for the first time
adv
only after ... is it ...; only when ... do you ...; not until ... do you ...(after the -te form of a verb)

()

N3
v5u, vi
to meet; to encounter; to see(逢う is often used for close friends, etc. and may be associated with drama or pathos; 遭う may have an undesirable nuance)
v5u, vi
to have an accident; to have a bad experience(esp. 遭う when in kanji)

N3
v1, vt
to see; to look; to watch; to view; to observe
v1, vt
to examine; to look over; to assess; to check; to judge

たい

N5
suffix
want to... / would like to...

N5
cop, cop-da
be; is(plain copula)
aux-v
did; (have) done(た after certain verb forms; indicates past or completed action)

N5
prt
right?; isn't it?; doesn't it?; don't you?; don't you think?(at sentence end; used as a request for confirmation or agreement)
int
hey; say; listen; look; come on
(ひさ)しぶりなのに

(ひさ)しぶり

N4
n, adj-no, adj-na
a long time (since the last time); first in a long time

N5
prt
don't(prohibitive; used with dictionary form verb)
prt
do(imperative (from なさい); used with -masu stem of verb)

のに

N4
prt
although; despite; even though; and yet
prt
whereas; while
(むね)高鳴(たかな)

(むね)

N3
n
chest; breast(むな is usually used in compounds)
n
breasts; bosom; bust

N5
prt
indicates sentence subject (occasionally object)
prt
indicates possessive (esp. in literary expressions)

(たか)()

N2
vi, v5r
to throb; to beat fast
(いま)のTo us

(いま)

N4
n, adj-no, adv
now; the present time; just now; soon; immediately
adv
another; more

N5
prt
indicates possessive(occasionally ん, orig. written 乃 or 之)
prt
nominalizes verbs and adjectives