Ah, OK. I know the word for friend, just not the kanji for it. XD; They don't teach us much kanji this year. :P (I'm not even supposed to know katakana, but I taught myself that because I thought not knowing it was stupid. :P)
Uhm, small point, though. The sound is "wa", but, interestingly enough, the hiragana for "ha" is used for the particle "wa".
So even though it sounds
Watashi no tomodachi wa Shitorinin desu.
It is written:
Watashi no tomodachi ha Shitorinin desu.