"Haiku" is a three-line poem with seventeen syllables in the pattern of 5-7-5. Also small words include one word. You can count your first line, "Isshoniiru", is "I tsu shi yo ni i ru". But, this is 7 words, so you have to think 5 words.

not to forget that haiku has to have a seasonal word, so it is not a haiku in traditional sense.