Okay, that's what will happen if the Sakamaki went picnic with you together. Scroll down and read what happens~ Hope you'll all enjoy it :)
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Sakamaki Ayato

Ayato brought you to a park and sat down on the green and soft grass. Both of you chatted for a while and had a great time until you felt hungry.

Ayato: "What's the matter (Y/N)?"

You: "N-Nothing..."

Then, both of you heard a faint growl that broke the silence.

Ayato, smirking: "Ha, so you're hungry."

You, your face burning red: "No! T-That's not how it is..."

Ayato: "Hmph, stop denying, here."

He took out a big plastic box from the bag and opened it proudly.

Ayato, with a proud smile: "Here, try some of these tokayashi that Ore-sama made!"

You, staring at the whole box of tokayahi that gives off strange smell: "A-Ayato kun?!!!" ****

Sakamaki Kanato

Kanato suggests that you should go to the park together with him as he wanted to try something. Even though you wondered what it is, you agreed without asking too many questions. As both of you arrived at the park, Kanato rented a double bicycle there.

You, smiling: "Eh, so that's what you want to try... To ride a bicycle?"

Kanato: "Yes."

As you wanted to ride on it, Kanato shoved you away.

You, confused: "K-Kanato kun?"

Kanato: "Please don't hop onto the seat suddenly, it is for Teddy, not you."

You: "................." *speechless* ****

Sakamaki Laito

Laito told you that he wanted to go on a date with you, and you think that going to the park is a great idea. After both of you've walked through the park and had lunch, you led Laito to a swirling tower and both of you stood at the peak and enjoy the cool breeze.

Laito, staring at you: "(Y/N)...."

You: "Laito kun...?"

You felt strange as Laito usually calls you Bitch chan instead of your name.

Laito, looking straight into your eyes: "I.... Love you."

You, blushing: "....Me too, I love you, Laito kun.... Forever." ****

Sakamaki Shu

Shu is sleeping on the couch, again. You knew it is unhealthy for him to sleep through the whole day and wasting his time. You woke him up and told him that he's going to the park with you. Even though he doesn't seemed to be into it, he went with you anyway. You were placing the mat on the grass when you suddenly realized Shu was not beside you.

You: "Shu san....?"

You turned your head and saw him kneeling on the grass staring at the bushes.

Shu, quietly: "Keep quiet (Y/N). Here, don't be afraid... Come on out...."

You stayed quiet beside him, and suddenly a stray cat jumped out of the bush and into his hands.

You: "Oh, so it's a neko.... I brought more than enough food, here kitty."

Shu and you enjoyed a Sunny afternoon together. (with the cat) XD ****

Sakamaki Reiji

Reiji spent the whole morning studying and doing research in his room. You decided to ask him to take a break and both of you went to picnic together.

You: "Eh...? Opps I forgot to bring water...."

Reiji, smiling: "I knew you would forget to bring it, that's why...."

He took out two glass teacups, a ceramic white teapot with golden laces on it, two bags of Earl Grey teabags, and a large bottle carrying hot water.

Reiji, pushing up his glasses: "Hm, we can have tea as we enjoy the beautiful scenario here. Isn't that great, (Y/N)?"

You: "Reiji san.... Why don't we just cool down the hot water and drink it....." ****

Sakamaki Subaru

Subaru and you are walking in the park, and as both of you enters the 'Rose Maze', Subaru was gasping at this beautiful place. He knelt down and looked at the roses of different colours-- red, black, and his favourite, white.

Subaru, amazed: "That's... so beautiful...."

You, smiling: "You think so too?"

Suddnely, a voice shouted at Subaru and you.

Random officer: "Hey! Picking flowers is strictly not allowed! Hands off."

You turned your head and saw Subaru planning to pick those white roses.

You, trying hard to haold back your laughter: "Pffffftt...."

Subaru, face turned red: "T-That's... (Y/N) stop laughing!!!!" ****