indicates sentence topic;  indicates contrast with another option (stated or unstated);  adds emphasis
 sky;  air;  ether;  firmament;  the heavens
 indicates possessive;  nominalizes verbs and adjectives;  substitutes for "ga" in subordinate phrases;  (at sentence-end, falling tone) indicates a confident conclusion;  (at sentence-end) indicates emotional emphasis;  (at sentence-end, rising tone) indicates question
 at (place, time);  in;  to (direction, state);  toward;  for (purpose);  because of (reason);  for
 to attack;  to assail;  to succeed (someone in a post, role, etc.);  to make a sudden visit
 to come (spatially or temporally);  to approach;  to come back;  to do ... and come back;  to come to be;  to become
 eye;  eyeball;  eyesight;  sight;  look;  stare;  notice
 demon;  devil;  evil spirit;  -crazed person;  -obsessed person;  fiend
 to throw down;  to bring down;  to kill;  to defeat;  to overthrow;  to trip up
 to revive;  to come to oneself;  to be restored to life
 good;  advantage;  sake;  purpose;  consequence;  result
 Kamen Rider (TV series, the titular character)
 hero;  heroine;  Eroica Symphony (Beethoven, 1804);  Heroic Polonaise (Chopin)
 indicates direct object of action;  indicates subject of causative expression;  indicates an area traversed;  indicates time (period) over which action takes place;  indicates point of departure or separation of action;  indicates object of desire, like, hate, etc.
 to collect;  to assemble;  to gather
 riddle;  puzzle;  enigma;  enigmatic;  mysterious
 network disturbance;  communication failure;  telecommunication malfunction
 indicates sentence subject (occasionally object);  indicates possessive (esp. in literary expressions);  but;  however;  regardless of;  whether (or not)
 to get up;  to rise;  to wake up;  to be awake;  to occur (usu. of unfavourable incidents);  to happen
 inside;  interior;  among;  within;  middle;  center;  during
 person;  someone;  human beings;  mankind;  human (Homo sapiens);  (other) people;  others
 to enter;  to go into;  to break into;  to join;  to enroll;  to contain;  to hold
 Satchō Alliance;  1866 alliance between the feudal domains of Satsuma and Chōshū
 to tie;  to bind;  to bear (fruit);  to close (e.g. deal);  to confirm;  to connect (two distant places);  to close tightly
 if;  when;  and;  with;  used for quoting (thoughts, speech, etc.);  promoted pawn;  indicates a question
 homework;  assignment;  pending issue;  unresolved problem;  open question
 to take out;  to get out;  to put out;  to reveal;  to submit (e.g. thesis);  to turn in;  to publish
 to leave (behind);  to leave (undone);  to not finish;  to save;  to set aside;  to leave (to someone, esp. after one's death)
 time;  hour;  period;  class
 behind;  rear;  after;  later;  remainder;  the rest;  more (e.g. five more minutes)
 day of month;  counter for days
 extent;  scope;  sphere;  range;  span
 to spread (out);  to extend;  to stretch;  to reach to;  to get around;  to fill (e.g. a space)
 light;  illumination;  glow;  lamp;  light
 this;  this one;  this person;  now;  this point (in time);  here;  used to stress the subject of a sentence
 so far;  up to now;  hitherto;  that's enough (for today);  it ends here
 that;  it;  then;  that point (in time); (arch.)  there; (arch.)  you
 at;  in;  at;  when;  by;  with;  and then
 Shibuya, a special ward in Tokyo