At the same time, a similar question also occurred at Mafuyu's house.
"Onee-sama, what's your relationship with that guy?"
As soon as they arrived home, Miharu hurriedly asked this very important question.
The scene where they both whispered was very memorable to her.
"Teacher-Student relationship."
Mafuyu answered while observing the surroundings at home.
After making sure there was no mess, she felt relieved.
Her little sister was a perfectionist, and very paranoid.
If she knew she couldn't even clean her own room, there would be big trouble.
This was also the main reason why she hurried to Ren for help in the morning.
"So why did he show up at Onee-sama's house?" Miharu still couldn't understand her reasoning. "And when I asked him, he lied to me, saying that he came to help Onee-sama clean the room. It's an awkward lie."
"No, he actually told the truth."
Denying her little sister in her heart, Mafuyu explained: "He's here to help me with school matters, and I need his help to add some student information."
"I understand. That's what happened."
Miharu didn't doubt her sister's words, but she still couldn't understand.
"Since he's here to help you, why did he lie to me instead of telling the truth?"
"He might be trying to joke with you." Mafuyu continued to explain to her.
"It's unforgivable. He teased me by tarnishing Onee-sama's reputation."
Miharu couldn't accept the fact that Ren deliberately said he was here to help her sister clean the room.
How could her perfect sister want someone else to help clean her room?
"It doesn't matter. I have a good relationship with him. It's okay if it's just a simple joke."
After reaching this point, Mafuyu could only try her best to complete her lie.
At this point, she finally understood that a lie required countless lies to complete.
"Inconsistency!"
Miharu noticed the loophole in Mafuyu's words.
Earlier, her sister clearly stated that they both had a teacher-student relationship, but now she said they had a very good relationship and it didn't matter if others mocked her.
Coupled with their recent close interaction of whispering, wasn't this relationship too good?
"Miharu, you sit down, I'll get you some water..."
Mafuyu said this and walked towards the kitchen.
"No, Kamikawa-san just poured it for me."
Miharu pointed to a glass of water on the table and stopped her.
Wait... Why did someone else naturally pour water for her when she came here now?
As if she were a guest in her own home, so much so that she didn't realize anything was wrong now.
Looking back now, all of this was doubtful.
"Miharu, I bought canned fruit yesterday, do you want some?"
Asking this, Mafuyu walked to the kitchen, opened the refrigerator, and took out a can of canned white peaches.
"Wanna eat."
Miharu sat at the table and sipped water to calm her mind.
Calm down, maybe she's overthinking.
Despite many doubts, so far there was no convincing evidence.
"Gone. Where did he put can opener? He clearly put it here before."
At this moment, Mafuyu's voice came from the kitchen.
'Him? Before? '
Miharu noticed the keywords in her sister's words.
Definitive evidence has emerged!
Onee-sama and him are a couple!
And they're the type who already live together!
In this way, all the previous irrationalities can be clearly explained.
The first was why it was okay for him to open the door and pour water for her.
Because the other party also lived here, it made sense for them to pour water for a guest at home.
The second was mocking herself.
Her sister's boyfriend was also her brother-in-law, so it was okay for him to make harmless jokes to her.
Then there's the matter of the two of them whispering in front of her, isn't it normal for a couple to do this?
Ultimately, her sister was teaching a girl named Kominami Asumi at Ren's house, but when she brought her there, there was no doubt that there was no key.
After thinking for a moment, Miharu provided a fitting explanation.
It was to hide the fact that they both lived together from others.
Rent the house next door and use Ren's house as a cover.
In this way, even if someone asked why he and her sister appeared together, they could use the neighbor excuse to fool them.
This perfect excuse seemed to have been thought of by her sister.
And since they both actually lived together, surely Ren rarely went to that house, so it was understandable if he didn't have a key.
Moreover, who would carry around a useless key in their own house?
Since he rarely went there, her sister used that house as a place to tutor students, this was the real reason why her sister was at "his house".
Everything explained.
'Onee-sama actually has a boyfriend! '
Miharu, who made the decision, couldn't quite accept this fact.
Wait, this is all just speculation without substantive evidence.
Maybe she misunderstood.
If Ren and her sister were already living together, there must be evidence of them living together.
As long as she found it, she would be able to prove that as she suspected, Ren and her sister were a couple and lived together.
If she didn't find it, then she misunderstood.
With this thought in mind, Miharu stood up and went to the bathroom.
In general, since they both lived together, there should be two toothbrushes or something.
"One?"
After entering the bathroom, Miharu only found one toothbrush and toothpaste cup.
Was she really thinking wrong?
No, maybe her sister had set aside her share before she came.
As long as her perfect sister didn't want it to be revealed, she would never leave such an obvious loophole.
"Onee-sama, let me help you find it."
After coming out of the bathroom and seeing Mafuyu still looking around in the kitchen, Miharu walked in.
"Okay."
Mafuyu didn't refuse her sister's kindness.
'There should be one in the kitchen, right? '
Miharu said she was helping her sister find the can opener, but she was actually looking for evidence to prove that they lived together.
Of course, deep down, she hoped she wouldn't find it.
However, after searching around the kitchen, Miharu found a pair of matching mugs.
The evidence proving that her sister lived with him also appeared!