i can just see the theme of this one

"WHY IS OUR YOUNGER SISTER MORE POPULAR!?"

oh i was wondering what with this setup and now it makes sense

Satori is more popular than Koishi tho.

Artist's commentary:

Title: 立場の弱いお姉ちゃんズ
「正直食欲の秋とか無くなればいいのに」
「何考えてるか全然分かりません」
「怖…くなんかないんだよ！ うー」

Title: Older sisters in a vulnerable position
"Frankly, I wish we didn't have 'autumn eating'..."
"I don't at all know what she is thinking."
"I'm...really...not afraid of her! Uuu!"

Needs more Mugetsu.

bunbunmaru said:

Satori is more popular than Koishi tho.

And four years later, that turns into hilarious in hindsight,