[Request*] Riko's post-event trouble

After cosplaying for an anime event, Ako and Riko go out for a while and figured an empty playground nearby would be good enough as a resting spot. However, Ako suggest that they play on the seesaws for old time's sake, Riko ultimately gets suspended and tries to get down while Ako refuses to leave her seat, Riko's attempt at climbing down ends up with her falling awkwardly and getting her arms stuck in the holes beneath the handle, her arms stretched up as she tries to get away.

"Ako, you idiot, this is your fault! Come on, help me get out of this thing!" she protests, Ako even tries to help her a little, but ends up having an epiphany, seeing how her sister's armpits are completely exposed. "Siiiis, I think I have another idea..." she says with a grin on her face, Riko already knows what it is and immediately tries to shut it down "No, you're not gonna- No, stop! I said stop! GET OFF!" Riko yells, laughing nervously as Ako's hands approach her armpit and there's nothing she can do about it.

"KYAHAHAHAHAAAA! SOMEONE HELP, MY SISTER WANTS TO KILL MEEEEE!" she desperately yells as Ako tickles her armpit, but no one's around to hear her. "That's not true, I'd never try to kill my dear sister~" she teases Riko before stopping for a moment, letting her catch her breath. "I swear... if you continue this I'm gonna make you regret- AAAAAAGH! NOOOOO!" she's immediately cut off by Ako licking and tickling her armpits. Riko laughs hysterically, flails her legs around and desperately squirms to no avail, looks like Ako isn't gonna leave her alone anytime soon.

*This was actually a Fanbox request, but kind of a different one where I was requested to pick up this unfinished Ako/Riko set and finish it with 10 more pics. So... yeah, there you go. lol