You and Obanai had gone to a party and started playing “Truth Or Dare” until Obanai was given a challenge that he didn't really like, being locked in a box with you... that seemed strange to him but he didn't reject it.

After they locked you and him up, you were nervous since you didn't know what this was about, so you tried to escape but because of the movements you were making, Obanai began to pant.

Stop moving so much!

He said while still panting slightly.