Tbh, the moment I saw Stolz imagining stuff, Lei can't be far behind. He has the thought processes of an adult deep down but his tongue and attention span borders on a child or autistic person. I always view the Beach house as an opportunity to discover both elements like Lost in Translation~
Ohhh fffffido. I had not considered Dark Stolz. ; /
IN CANON YES. I agree it would never work out, but in something light hearted as beach house however. Need I remind you Lei is not an assassin there but a church boy (or Ayangji boy) in that continuity who is just praying. And has a pet rabbit.