James wants to speak, to scream, but Remus holds up his hand and continues speaking, "Regulus was involved in dangerous things and he knew he most likely was not going to make it. He was hunting horcruxes and he succeeded in finding all 5 of them, so that Dumbledore could kill Voldemort. Regulus is the reason we won the wizarding war and survived. Regulus had been working in Voldemort’s ranks for over a year when he appeared to give me a message. He told me he was going to destroy the final horcrux and then it would be time to win the war. He told me it was something he had to do alone, and at that moment he made me promise. I promised that I would obliviate everyone’s memories (specifically Yours and Sirius’) if he did not survive the war. At first I refused, but he wouldn’t leave unless I did it. It was twisted and wrong, but he was trying to protect you. I was trying to protect you. The worse came and Regulus died. I didn’t remove your memories at first, but it got to the point where I realized Regulus was right. You guys were completely broken over his death and I didn’t know what to do. Then I remembered the promise I made, so I went to Dumbledore and we completed Regulus’ last wish. Dumbledore was able to wipe him from the world's mind, but I told him only I would obliviate you and Sirius. The night that it happened, and your memories were gone, I worked to get rid of all the evidence of Regulus’ existence. I hid all his belongings, and I burned all the photos. Except for that one. I couldn’t will myself to destroy it,  no matter how hard I tried. But I knew Sirius would have found it if I left it in our flat, so I asked Lily if I could leave a box of stuff in her attic. That’s why the photo is here, and that’s why you don’t remember him."