“The Return by Death that you possess is an incredible Authority. You do not comprehend how it is truly to be used. You can redo the world any number of times before you arrive at the result that you desire. To a researcher, this is the ultimate ideal manifesting in physical form. Is that not so? By rights, you should only be able to obtain one result for any particular thing. You can make excessive amounts of varied deductions and suppositions about the results. But there is usually but a single result. You can never repeat the exact same conditions in search of a different result. The conditions all shift: time, environment, memory, procedures. ‘Back then, if I’d only changed one thing, the results would be different.’ This is not in the realm of ideals but of dreams and delusions. Because I have the heart of a researcher, your Authority truly makes my mouth water. With ‘identical conditions’ and ‘verification of differences’ secured, one can identify a ‘proper result’ and a ‘variant result.’ How could I not covet that? With it before me, how could I not test various possibilities? Of course, I will not coerce you to use Return by Death. You will use that power for the sake of the result you desire. And I shall lend my wit as much as you please so that your desire might be granted. I have high hopes that the great many results that shall be borne from this shall serve to satisfy my inquisitive mind. No one would punish a girl for wanting such a small thing, surely? Your desire for a future and my curiosity shall be satisfied together. Perhaps this makes you uneasy, for I do not know the future, either. I will not purposefully lead you to a mistaken future in order to test the results. All Unknowns are equal before me. By mulling and struggling against the same problems, the answer will come. This makes necessary the highest form of relationship between us. I swear I shall protect you with all my heart. But that does not change the fact that I cannot interfere with reality. If a physical obstacle stands before you, I can expect that challenging it will break your mind and body many times over. If it comes to that, I genuinely intend to exert my every power to protect your mind. I will not tell you there are no ulterior motives involved in that. But I don’t want you to think that I am calculating everything because of my inquisitive mind. I do think fondly of you, and it is a fact that my maidenly heart wishes to be of aid to you. I am repeating myself, but you and I are ideally compatibility. I can say it plainly. I will use your power, and you will use me for the sake of your ‘optimal future.’ It is my genuine desire to be a woman used for your own convenience. Though it would only be in this dream world, should you desire it, I do not mind using this body of mine to comfort you. I shall happily grant it to you. Oh my, that might not be the best thing for the people you care for, that silver-haired half-elf and that blue-haired demon…they who you have sworn to save and protect without fail. Not that I can claim any particular opinion toward them, but at any rate, please take it as expressing how strong, how unshakable my feelings are. Many difficulties shall befall you in the future as well. Your resolve shall lead you to challenge them, but that is tragic. I will become the beacon that lights your path. So, too, will I be the bonds you wish to protect. Your questions, your burdens, your feelings, your hopes…unexpectedly, through the Trial, you have taught me just how much value these things hold. Certainly, to you, the scenes you saw might have been Hell itself. But given the choice between knowing beforehand and ignorance, I wish to praise the will to learn even such tragic facts. With these serving as your gruel, you shall stretch a hand toward the future, even at the cost of your life. That Trial was necessary so that you might learn there might be sacrifices made for that future’s sake. As you use Return by Death more and more, perhaps your emotions might fray, perhaps the deaths of people precious to you might fail to move your heart, but most of all, you might have to lose some part of yourself in order to arrive at the place at which you are destined to reach. The Trial prevented that end. I did that, in order to protect you. If those scenes pained your heart, putting you on the verge of breaking, I do not exaggerate in saying I did it for that sake. Because it would serve as the linchpin for your moving forward, I accepted it. With my words, I shall grant you the strength to advance forward. I will console you, I will scold you, I will even love you. Or if it is hatred you require, I will devote that to you, all for you. You like girls who devote themselves to you, yes? You need me. By yourself, you cannot grasp the future. It is none other than I who is the most suitable girl for you. —You need me. And I need you. Already, there is none other than you who can satisfy my curiosity. I mean, I’ve already discovered you. You broadened my world. Through you, I, said to be the Witch bearing the greatest intellect in the world, have tasted the fruit of the Unknown once more. If you want to use that power to save someone, then save me. Having even the crumbs of that noble thought is enough for me. Please. I want you to trust me. Perhaps you think I deceived you because of the fact that I did not expose enough of what I truly thought beforehand. I wanted to get the timing right. If I exposed these feelings while our relationship was still shallow, you would probably have pushed me away. I did not want that. I could not endure that. That goes for you too, yes? If you lost me as a collaborator, your heart would surely be broken. We are both working toward our optimal ends. And I know what that optimal end is. I can help you. Through infinite trial runs, you will arrive at the future, albeit with your heart worn down and scarred by the ordeal. Let me do this. I will never betray your trust. Certainly, my heart might be attracted to the resulting choices, and my inquisitive heart may waver toward paths other than that which is optimal. I cannot hold my own greed in check enough for me to tell you that will never happen. I acknowledge that. But I will gloss over nothing. I will speak openly and honestly. Even if the result of that will damage your trust, I will expend no effort to win that trust back. No matter what might happen, I will, without fail, bring you to the future you desire. I absolutely, absolutely will. So as the choices necessary for that become clear, would you not let me be the one to choose? It will be precisely according to the preamble for the pact: I will grant what you desire, what it is that you seek. It will be no more and no less than this. After that, how much you permit your body to be sliced for the sake of that which you desire and crave is up to you. I have conveyed my resolve. Next, I want to hear yours. I want you to demonstrate that you, who would form a pact with me, who would benefit from my cooperation, have the enduring spirit required to arrive at the future without fail. It is you, the first and only one to overcome the second Trial, who can puff out your chest and speak these words with pride. Do this, please me, and I shall release you from the tomb and guide you to the third Trial. Beyond that rests the liberation of the Sanctuary. In so doing, the precious people most important to you, the people you care about held captive in the Sanctuary, will be saved. For the sake of this, you will undergo a true Trial. For the sake of that, seize me, use me, do with me as you please as you let your greed rage, and we shall grasp the future together. This is everything I have to offer to aid you and find what you desire, what you seek. I intend to peel back everything honestly and earnestly. I will not allow the other girls around us to interfere any longer. It is as you said: This is a matter between you and I alone. I want you to give me your answer. I have told you everything… Truly the naked truth. Passionately. This might be close to love. A vow of love. So how will you respond to my love? I want a reply. This reply, after all, will be another thing serving to satisfy my curiosity.”

—With that, Echidna smiled adorably.