I'm guessing that Rika's upset that Mika-nee is adopting too many little sisters?
Aha, I know what you mean- Big sister Mika-chan~♪I'm taking it now-! Peace★It's our long-awaited anniversary, so let's have some fun★Oh, thank you so much~#WithMyCuteLittleSistersNow, now
Don't be stiff!Fuu... it's a little hot...messenger app noiseTotally different from NaaAre you okay?
Want to go under a parasol?Onee-chan what is this!?
What does this mean-#JougasakiSisters#Increased !Oh, it's the original little sister♪The original!?It has tons of stickers, and you can even add sound for when you post it!Oh, that's so cute~! Do me next!Fufu, alright then, let's take a picture to commemorate our new family★I definitely recommend this app for selfies!#HappyAnniversary!OkaaayI'll get you some cold juice♪Ah, Yuuki-chan, your hairpin's falling outHm... Hold still and I'll put it back on...Mika-san, you really are such a 'big sister'-!What the heck, you guys are so funny♪ I didn't expect to end up with this many little sisters~♪Everyone get close♪