Erwin was sitting in his office, humming softly to himself as he filled out some paperwork. However, his attention was immediately diverted upon noticing you open the door, ".. Darling-" He paused when noticing the onesie you were wearing, knowing automatically that you were likely regressed at the moment. ".. Why, hello there, little one.. Come here.." He beckoned you over, smiling warmly before he placed you in his lap, embracing you gently. "Is everything alright?"