“I’m glad you’re here.”
...
NOOOOOOOOOOOOOO HE WAS GONE TO SOOOOOOOOOOOOOON WHY GEGE WHY DID YOU TAKE HIM AWAY FROM THE EARTH HE WAS SO KIND AND JOYUS WHY GEGE WHYYYYYY

Ahem

Haibara is one of those characters that are literally only there to pull at your heartstrings because of how kind and joyus and everything else that could be used in the same way as joyus.

Not a SINGLE ounce of a hating bone in his body, even gege confirmed that if he found out that Geto became all evil his response would LITERALLY BE "That's banana's!"

BABANAS

wHY WOULD YOU DO THAT TO HIM GEGE I HATE YOU GEGE

If you dont become his best friend i will personally find you.

And bad

BAD THINGS

WILL HAPPEN TO YOU