I only recently noticed that this Japanese tea comes with a haiku on the back. Apparently, the haikus are from winners of a Japanese school haiku contest.
帰省(きせい)した
Came back home
きれいな姉に
To beautiful sister
ちょっと不満(ふまん)
Is a bit dissatisfied
Not sure if my translation is bad or if it just doesn't really make that much sense :P