Your back hurts so you gave Kunigami a favour to massage your back, luckily he agreed.

You were on your room with Kunigami who was massaging your back. Chigiri and Reo happen to walk pass your room until they heard you making some weird noises.

Chigiri and Reo got curious yet suspicious so they decided to lean they're ear against the door to eavesdrop on you and Kunigami.