Smartphone with internet connection.
I guess you said this in jest😅
Here’s what the MC has to say about this:
Maybe the real monsters are the people we met along the way.
Learn to use the 3 sacred treasures of conversation from Yumiella (Villainess Level 99):
100 girlfriends, chapter 157: Rentarou’s family daily life (part 3)
The relevant part is pages 6 to 7.
Same.
In my case, Gundam: Witch from Mercury was the one that single-handedly brought me back into anime after 4?+ years of not watching.