彼は私の部屋へ上がってきた。

he; him; his; boyfriend

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

I; me; private affairs; personal matter; secrecy; selfishness

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

room; apartment; flat; pad; chamber; stable

indicates direction or goal (e.g. "to")

to rise; to go up; to come up; to ascend; to be raised; to enter (esp. from outdoors); to come in; to go in; to enter (a school); to advance to the next grade; to get out (of water); to come ashore; to increase; to improve; to make progress; to be promoted; to advance; to be made (of profit, etc.); to occur (esp. of a favourable result); to be adequate (to cover expenses, etc.); to be finished; to be done; to be over; (of rain) to stop; to lift; to stop (working properly); to cut out; to give out; to die; to win (in a card game, etc.); to be arrested; to turn up (of evidence, etc.); to be deep fried; to be spoken loudly; to get stage fright; to be offered (to the gods, etc.); to go; to visit; to eat; to drink; to be listed (as a candidate); to serve (in one's master's home); to go north; indicates completion