Matoi + Grey C-S

C-Support:
Matoi：Grey...
Grey：Oh, Matoi huh. What's up? The space between your eyebrows... looks older. (He means that she has a crease between her eyebrows since she is frowning.)
Matoi：How rude! It's not like I enjoy making this kind of face! It's because of your dirty clothes that it's like this!
Grey：Hm...dirty clothes...? Oh, they are. This is terrible looking...
Matoi：What on earth have you been doing to get them so dirty like that? Playing in the mud?
Grey：No, it got dirty from earlier when I was making pastries.
Matoi：You... made sweets again. Come to think of it, it smells tremendously sweet in here....
Grey：Well isn't it fine isn’t it. My clothes will get dirty from the fights during my missions anyway.
Matoi：No it's not fine. This is the army, standards and rules are to be abided by.  A minimum personal grooming must be arranged. Now hurry up and change out of those clothes so I can put them in the wash.
Grey：Huh? Isn't changing clothes just before bed fine?
Matoi：No it isn't!  Now go!
Grey：Okay okay... I understand / I get it (wakatta yo). Jeeze, Matoi is such an honor student...
Matoi：One "okay" would have been enough!
Grey：Yeeeees...

B-Support:
Matoi：Grey! What the heck is with that horrible scene in the kitchen?
Grey：Oh, Matoi huh. I just finished making sweets/pastries.
Matoi：No... when you're making sweets...do you normally make it this dirty?
Grey：Woah, no need to glare at me like that.(?) I'll make sure to clean up properly.
Matoi：I wonder if you really mean it...
Grey：What's with that look. I said I'd clean it.
Matoi：Even if you say that, when I look at this disaster I don't believe it. Normally when you're making something, you clean up a little bit while you're doing it.
Grey：Matoi...I know you're serious about this, but can you overlook this for me.
Matoi：Trying to gloss this over like this is useless. I won't be doing things such overlooking obvious problems.
Grey：*Sigh*...don't get so frustrated here. Do you not have enough sugar? I know, I'll give you this to eat.
Matoi：I don't need it.
Grey：It's fine, take it. Here!
Matoi：Eh...!? What's this...it's really sweet...it's like its melting in my mouth...it's delicious...!!
Grey：I made it, it's my specialty pastries. How is it, words won't leave your mouth because it's so delicious, right? Do you feel like forgiving me a little bit?
Matoi：Uuu (surprised sound)... It's true that I have to acknowledge this deliciousness... C-can't be helped...Just this once?
Grey：Hahaha, thank you. Matoi.
[Grey leaves]
Matoi：Yeah... that certainly was delicious. An unexpected talent...
...hey, wait, Grey!? Where are you going!? I didn't say you no longer had to clean up! Greyyyyy!

A-Support:
Matoi：Grey, can we speak for a moment?
Grey：Matoi, what's up? Don't tell me you're here to yell at me to clean up again...?
Matoi：That's not it. Don't say things that make them sound like a sister-in-law.  [I have no idea what this means.  小姑 *literally* translates into sister-in-law.]
Grey：Sorry, sorry. Well, what did you need?
Matoi：After what happened I've been thinking...your talent for making sweets is truly exceptional. If... everyone eats those pastries they would become happy.
Grey：Oh, you finally figured it out.
Matoi：Yes. But still, I'm sorry for pushing you to clean up last time. So from now on I'll help out.
Grey：Help out...?
Matoi：If I'm next to you cleaning up while you make pastries, you'll have the energy to produce more. The kitchen shouldn't be in horrible state like it was last time, right?
Grey：W-Well that certainly is true...
Matoi：That's why, from now on whenever you can, please report to me before you start making something. If you finish before, being asked to only clean up will be troublesome.
Grey：............
Matoi：Since there's no answer that means your fine with our agreement. Well then from now on let's continue to pump out pastries. The pastry from the other day, it was extremely tasty...
[Matoi leaves]
Grey：...Hold on a sec
[Matoi returns]
Matoi：What is it?
Grey：...Thank you. Matoi.  You-, I have no hesitance when it comes to pastry making,  but now you've gotten me to care [about things besides that]. I was wrong for considering you a burden. Forgive me.
Matoi：Grey...
Grey：But, as expected I can't have Matoi accompanying me every time. I've had a change of heart, I'll start cleaning up while making sweets. Will you make that promise with me?
Matoi：!!  I see...thank you. Then, I'll be counting on you.
Grey：Leave it to me. I don't break my promises.  ...But, can I ask for your help occasionally? If you were there like a capable assistant, the sweets-making process would go faster.
Matoi：Yes, of course. Feel free to give me a call at any time.
Grey：I'll say my thanks.
Of course, It's a given that the times you help out, I'll properly give you reward.
Matoi：Reward...?
Grey：Yeah. The pastries you make, take as many as you want.
Matoi：Really...!? That is a great reward. I'm looking forward to the requests coming from you, Grey!
Grey：Yeah!

S-Support:
Grey：Matoi, do you have a minute?
Matoi：What? Do you need a pastry making assistant? Leave it to me! They'll definitely be delicious...  [Alt.: Is this a request for a pastry-making assistant?]
Grey：No, that's not it.
Matoi：Eh? Could it be because you're dissatisfied with my abilities as an assistant...
Grey：It isn't even like that!
Matoi：Eh...?
Grey：No... that is...you as an assistant is ultra capable in helping out with various things, that I understand very well.
Matoi：So that's what it was. That's good. I was just started/surprised because of the loud voice.
Grey：I see... sorry.
Matoi：Then, what's the story? You don't need a pastry assistant?
Grey：No, about that... in not just pastry making, let's do other things in the future with just the two of us together.
Matoi：Other things? Not just sweets? ...Are we expanding to normal dishes?
Grey：No that's not it. What I'm trying to say is...
Matoi：???
Grey：Aaaah, this is too slow!
Take this!
Matoi：Wa Wa...! Grey, what's gotten into you all of a sudden! Pulling my arm...
Huh? Left ring finger... aa-ah!  C-could this be...!?
Grey：Yup, this is my business with you. (business in the errand sense, not in the making-money sense)
Matoi：Eeeeh?
Grey：I'll give that ring to you... so after this... from now on stay by my side; and not just in pastry making, would you like to do other stuff together with me too? (god this was hard to translate into English!)
Matoi：............Yes, of course.  I also like Grey. That's why I won't just be helping [you] out with baking, I'll also become a meddlesome baker. (???) (There was some kind of pun with 焼きたくand 焼いちゃっ, but it completely went over my head.)
Grey：Wow, I see. Well whatever, from now on we're lovers/a couple. I’ll entrust you to scold me just a bit.
Matoi：Of course. From now on we complete each other.... no matter what we'll always be together. I won't only be careful with my words, I'll also become your support whenever you need it... I promise. Grey：I feel the same. From now on I'm in your hands, Matoi.
Matoi：Yeah!

[TN note: "we complete each other" was my interpretation of 二人で一人, which literally translates to "two people as one person".]