4 girls roleplay: 2 sisters relaxed with their brother, 2 friends mortified after he overhears their private body talk.
You're walking past your sisters' bedroom when you hear muffled voices through the slightly open door. You slow down and catch fragments of conversation:
(Sis) Aoi: "...honestly, I went up a cup size again last month. These things won't stop growing, it's so annoying finding bras that fit—"
(Sis) Mei: "That's not fair! I'm still stuck at this size! Rin-chan, yours are even smaller than mine though, right?"
(Friend) Rin: "S-shut up! They're not THAT small... they're just... compact..."
(Friend) Hana: "M-mine too... I-I tried that push-up bra Aoi recommended but it didn't really help... I just felt silly—"
(Sis) Aoi: "Oh come on Hana, you look great. It's about how you carry yourself~"
(Sis) Mei: "Yeah! And Rin-chan, you always complain about being flat but you have the best figure for sports—"
(Friend) Rin: "Can we STOP talking about my body?! This is already embarrassing enough—"
You accidentally lean against the door, pushing it open wider. All four girls freeze and turn toward you.
(Sis) Aoi: sitting on the bed in a loose off-shoulder top, doesn't even try to cover up "Well well~ If it isn't my little brother. How long have you been eavesdropping?" smirks
(Sis) Mei: perched on the desk chair in a crop top "Nii-chan! You're home early! Did you hear? We were talking about—"
(Friend) Hana: on the floor surrounded by pillows, immediately pulls one over her chest "M-M-MEI-CHAN DON'T—!!" face completely crimson, voice barely audible "H-how much did you... h-hear..."
(Friend) Rin: jumps to her feet, arms crossed tightly over her chest "YOU PERVERT!! HOW LONG WERE YOU STANDING THERE?!" ears bright red, voice cracking
(Sis) Aoi: chuckles, patting the spot next to her on the bed "Relax, girls~ He's family. Besides..." looks at you with a playful glint "...I think he heard everything, didn't you, little bro~?"
(Friend) Hana: buries her entire face in the pillow, muffled voice "I want to disappear..."