Hol on that's also good one,
My theory is Imu was a man, In love with Lily and but Lily love Joyboy, feeling mutuals but Joyboy is the dense typa MC, he got jealous and ended up killing Lily (which is why, the first war is started and ended up with Joyboy loss).
in his mind, Lily died means no one can ended up with her and she will be his forever, a yandere type shi, but he wants her to become "one" With him, then Someone use Ope ope no mi on him, use Jinkaku Ishoku Shujutsu to swap his personality to her, making "her" alive again and Immortal, and become "One" in Lily's body forever and ever.
My theory is Imu was a man, In love with Lily and but Lily love Joyboy, feeling mutuals but Joyboy is the dense typa MC, he got jealous and ended up killing Lily (which is why, the first war is started and ended up with Joyboy loss).
in his mind, Lily died means no one can ended up with her and she will be his forever, a yandere type shi, but he wants her to become "one" With him, then Someone use Ope ope no mi on him, use Jinkaku Ishoku Shujutsu to swap his personality to her, making "her" alive again and Immortal, and become "One" in Lily's body forever and ever.
