"Different Life" had three ways of use.
The first required no casting materials. You operated it manually yourself, and the quality of the result depended entirely on the strength of your imagination. Having concrete experience made the effect a little better; beginners without experience got poorer results. The first time was generally mediocre, though the speed might improve after becoming proficient. But because it was not the complete set, something always felt slightly off no matter what.
The second required casting materials: one corpse, whether whole, in a lump, a puddle, or a vat. No experience was needed. It was ready to use immediately, idiot-proof, and completely hassle-free, guaranteed to give someone an exclusive experience they would never forget for the rest of their life. The only problem was obtaining a corpse.
The third also required casting materials, and the other party had to be alive. But because they were alive, you had to obtain their complete consent before casting the spell. Only then could both sides have a perfect casting experience. If they refused, then it was not allowed.
Therefore, if Ren Suo wanted to become Ren Xingmei physiologically, he first had to obtain Ren Xingmei's complete consent.
Ren Xingmei and Dong Chengling were clearly dumbfounded. Only Lorifis, the alien who could not understand Earth languages, was still clapping with a touched expression, as though celebrating how two lovers had finally become siblings.
"W-what does that mean..." Ren Xingmei asked blankly.
"It means exactly what it says," Ren Suo said. "The only way to fool the Diedra people without making them suspicious is to give them a Sony and an otherworld coordinate. As long as those two roles are present, they will not pay much attention to where everyone else goes."
"My clone can play Sony, but the otherworld