Great episode but from the recent episode i guess Elena and Shuichi had something together back then. Maybe they even dated each other. But shuichi lost those memories more like the memories were erased and its pretty sad man. no wonder shuichi my guy looks sad and empty.
suichi's memories erased
on my prediction is by the. time he drink the thing, he was thinking on erasing his memories, while clair also has his own wish, idk if it was possible to have a two wish, because the alien says it's the first time that someone use his/her own wish on someone