The two camps seem to be:
-->Interprets page 1 as she was out hunting for guys, and then sloppily hiding it
-->Interprets page 1 as her teasing her junior with a dirty pun (chinPO (penis) ==> sanPO (walking for leisure))
While neither would really be out of character, I have to lean to the...
there are a ton of little details in this one, it feels thought out, with rounded characters unlike the sort of cruel wish fulfillment typical of the genre, rooting for kanae