Reading rec - Kirk/Chekov

I've been reading some Chekov fiction lately (mostly Chekov/McCoy or Chekov/Kirk - and yes, I'd like to have more threesome with these guys!), and currently am enjoying this WIP:

Out of the Darkness by SumEsseFuiFuturus.

Happy-making Kirk/Chekov (at least, so far and for me, YMMV and all :)