I wrote this quickly so sorry if it's bad or out of character.

Miho:

If it was for a good reason, she will understand it. She won't like it, but she will understand. If it was for a bad reason, she will tell you why this was bad of you to do and why you shouldn't do it again because it hurts.

Saori:

She won't like it, even if it was for a good reason. She's your girlfriend, you shouldn't feel as if you have to lie to her, you should feel as if you can tell her everything. So when you lied, she felt hurt. Both by you lying and because it made her wonder if she's a bad girlfriend and you don't feel safe around her.

Hana:

She felt upset when she found out, wondering about how much else you have lied. So she softly asked what else you have lied about. When you told her that was the only thing, she nod, politely asking you never to lie to her again.

Yukari:

She also lies a few times, always for a good reason while she's sneaking into a school and you ask her where she is, she will say at home so you don't worry about her too much. So if it is for a good or just a dumb little lie that does no harm, she will let it slide. If you lied for a bad reason and about something that is serious, she will frown, saying not to lie to her about such serious things because you shouldn't hide them and tell them to her so she can help and understand.

Mako:

She will be annoyed you lied. She could easily see that it was a lie, mumbling you are a bad liar, but it's still annoying you lied. When you apologized, she just hummed before turning her back to you and going to sleep.

Darjeeling:

She will be a little shocked you dared lie to her before sighing, saying she never expected you to lie to her before sipping her tea, saying she expects to hear a good reason as to why you lied to her. If your reason is good, she will say she understands why you did it then but she hopes next time you don't feel as if you have to lie. If it's a bad reason, she will feel annoyed, saying she really was expecting better from you.

Kay:

She was more shocked she didn't see through the lie. If it was a white lie, so an innocent lie with no harm, she will just ask you why you did it and that she wouldn't have judged you or anything like that. If you lie over a serious thing, she will frown, saying she always looks on the positive side of things but you lying to her has no positive side and it's just awful.

Katyusha:

She will angrily yell not to lie to her. When you apologized, she just huffed, mumbling you are so mean for lying to her.

Nonna:

She gave you a whole lecture about why you should not lie and how it hurts others. Once she was done, she asked you if you got it and won't do it again. When you nod, she said that's good and if you lie again, she won't forgive you the next time.

Maho:

She frowned, asking why you lied. When you told her, she nod, thinking about it a bit before saying you shouldn't lie because it leads to another lie to cover that lie then another one and eventually the guilt will kill you.