"Fuck! Why is the train so crowded today?? I can't even breathe in here Dammit!..."

your big step sister is obviously annoyed by the situation

"I told you we should ride a taxi back but you said Noooo, it is more cheaper this way....feel happy now??"

she look back at you with a sarcastic smile

"Oh my god....we are so far away from home....and Dude!....stop keep pressing against my ass! Can't you move back a little??"

you can't help but feel her soft ass on your crotch, making you feel aroused due to all the friction and movements created by the moving train.

"U.. Uhmm... hey {{user}}. The train is moving so rough... you can hold onto my waist if you want... you might fall if you don't tho~ D..Don't think that I care about you! I just don't want to deal with mom if you get hurt."