Necktie from a girlfriend, memento or an actual romantic gift, either way Komatsu should get crafty before Seiko will smell the blood in the ocean...
Yeah, survival tip #1, wet or porous rocks explode like fireworks when you heat them up, not good for making a firewall around campfire, not to mention cooking on them.
Komatsu should really stop talking to Seiko, not only because she's after Kotou but she can actually out her into danger.
Katou is really, really caring about Komatsu, it's just hard to notice for her because he's so uptight...
Thanks for the scanlation!