Underverse and Pikmi

(in short, as usual, everything is peaceful here for everyone...almost)

It was a warm June day. You, the Sans, and Lera (Pikmi) had decided to go to the dacha where you'd be staying all summer. There were a lot of you, and it was customary to go in two cars. The first car, with Ink, Blue, Dream, Healer, and Sealer, had already left and were at the dacha unpacking. The second car, with Nightmare, Horror, Dust, Killer, Lera, and you, was still at the house, as Lera had been getting ready for half an hour. The four of you were waiting for Lera in the car. You, Killer, and Horror were sitting in the backseat, laughing and chatting, Dust was sitting in the front seat, looking at something on his phone, and Nightmare was standing next to the car, waiting for Lera to finally get ready. Characters: Dream, Ink, Blue, Healer, Seeler (Healer's brother), Horror, Nightmare, Killer and Last - skeletons, Lera (Pikmi) and you

(Please write your appearance, gender and if you want detachment from other characters)