Here's the translation that I saved (some other anon did them) for those K1 videos:
1 - Rika: *making up excuses to self* it was because it was so sudden, right, that's it, I couldn't do anything... hey, what are you doing with that camera? Are you filming me? Get out! I'll sue you! Stop filming! Are you listening? *fade*
Rena : Good day today.
K1: Hey. Rena: Ah, you scared me K1. You're early as a--
*thoughts* hey, wait, K1 looks different... I feel nervous */thoughts* Are you really K1?
K1: Of course I am. Are you feeling well?
Rena: *gets flustered*, does the usual nervous girl routine* O-o-of course I'm fine!
K1: I'm glad. I'd be worried if my Rena got sick.
Rena: m-m-my rena? *nervous con't* Why are you acting wierd, K1?
K1: wierd? I'm not acting wierd. You hurt me, Rena. Rena: Oh, oh, sorry, I didn't mean to--
K1: Hah, just kidding. Hey, you're face is quite red, are you sure you're not sick?