I was reading a web manga, and came across this panel:
The spring break (春休み) has just started for this character, and apparently she refers to the following as poem (as in 詩を詠んでしまった):
It's because school days exist that holidays make a deep impression on you.
Which I understand.
But from the way the lines are broken, I can't see a 5-7-5 syllable pattern, so I'm not sure what distinguishing feature this thing has that makes it a "poem". It could have been some random text that someone has written and signed with their name, right?
Is there some kind of rhythm to read this that makes this particularly poetic or something?