"Doctor... am I really not pregnant?"
"We haven't determined why you are lactating, but you are definitely not pregnant, and your body is perfectly healthy."
"Phew..." Chika pressed a hand to her chest and let out a long breath. "Thank you, Doctor. We'll be going now."
After confirming the bite marks were gone, Chika had Rin accompany her for a full checkup. Only after multiple confirmations did she finally relax.
Leaving the hospital, Chika dragged Rin to a nearby dessert shop and began gorging on ice cream.
"Mmph... haaaah~" She shivered from the cold. "Whoa... thank God. I really thought I was pregnant."
Swallowing a mouthful, Chika slumped in her chair, then sat up and glared at Rin. "You didn't even tell me it was possible I wasn't pregnant! Hmph... you just wanted my body!"
"I thought you'd already checked before coming to me. Besides... Kaede reminded you at the hotel, didn't she?" Rin leaned on the table, grinning at her.
Flustered by his gaze, Chika looked away, pouting. "H-how am I supposed to face them now?"
"What's the problem? You went from being best friends to being sisters who shared the same 'cock.' Your relationship is even better now."
"What 'shared cock'?! Pervert!" She glared at him, biting her lip. She didn't "love" him yet—at most, they were a bit more than friends. But through a series of accidents, she had done that with him. She was becoming a depraved girl!
How could she face Kaguya and Kaede?
Rin didn't say anything, just watched her struggle with her thoughts. Before the ice cream could melt, Chika suddenly shoveled a large spoonful into her mouth.
Being not pregnant was better than the alternative. Since she'd already been to two "parties," there was no use overthinking it. When in trouble, just go to sleep and deal with tomorrow, tomorrow!
"As punishment, you have to take me out to play today!" Chika paused. "Normal playing! Not a party!"
...
Rin spent the afternoon being dragged around by Chika. Her carefree, optimistic nature allowed her to move on quickly.
They returned home around 6:00 PM. The moment they opened the door, Moeha was already in the foyer, as if she had a psychic link to her sister.
"Sister, welcome home~"
"Uh... yeah, I'm back."
Despite having fun, Chika felt a strange guilt seeing her sister, like she'd been caught stealing Moeha's pudding.
"You look like you had fun. Where did you go? With Kaguya-san? I was so lonely home alone today~"
Seeing Moeha's lonely expression, Chika's heart ached with guilt.
"Sister... next time you go out, can you take me? I won't be a bother."
Ugh! My heart! Chika felt like a wicked older sister who abandoned her sibling to seek pleasure.
But... she couldn't! If she took Moeha, Moeha might lose her "purity" just like she did! It felt good, sure, but she couldn't let her sister fall into his clutches! She would bear the "pain" of those clutches alone!
"N-next time there's a chance, I'll take you." Chika laughed awkwardly and bolted to her room. Moeha watched her panicky retreat and burst into a quiet giggle.
She knew exactly where Chika had been—at the hospital and then playing with Rin. Teasing Chika was just too much fun. Moeha suppressed her laughter and knocked on Chika's door.
"S-sister... can I come in?"
The moment the door opened, Moeha lowered her head, her shoulders trembling as she faked a sob. Her voice cracked. "Sister... I'm sorry. I... I didn't know I said something wrong. I made you unhappy. I won't ask to go with you anymore... please don't hate me."
"It's not like that! I'm not leaving you behind because I want to!" Chika scrambled to explain. "Let's... let's play a game together, okay?"
Chika pulled Moeha into the room. Moeha seized the moment to hug Chika, burying her face in Chika's breasts, her voice still trembling. "Sister... you've been ignoring me for days. Did I do something wrong?"
Chika froze. She realized that because of her "pregnancy" scare, she had been distracted and avoiding everyone, including Moeha.
"No, you did nothing wrong. I've just been in a bad mood... I'm sorry, I didn't mean to ignore you."
Chika stroked Moeha's hair, comforting her. After a while, Moeha pushed back slightly, wiped her eyes, and gave Chika a brilliant smile. "I'm sorry, Sister. I overthought it."
"It's fine, it's my fault. Want to play chess? Or cards? I'll play whatever you want tonight~"
"Cards, then... Hmm?" Moeha sniffed and leaned her face into Chika's chest. "Are you wearing perfume? It smells so good~"
Chika's body went rigid. Moeha, her face still buried there, wore a wicked smirk. She pulled back to admire Chika's flustered face.
"This scent... is it milk? No, it smells even sweeter than milk... Hmph, did you sneak a snack without me? I want some too!"
"I... I didn't sneak anything..."
Chika was sweating. Pregnancy was ruled out, but the hospital had no explanation for the lactation. If Moeha found out she was producing milk... Gasp! Chika couldn't even imagine it!
Moeha didn't push further. She sat on the bed and played cards, but occasionally dropped words like "milky" or "boyfriend" just to watch Chika squirm.
If Sister knew I was at the party the other day, what kind of face would she make? Definitely an adorable one!