Errors:

date_flirt.json

Line 204 - Typo on the word 'Listen'

date_groupTalk.json

Line 290 - Potential error: [girl2] is referenced twice instead of expected [girl1] and [girl2].

date_influence.json

Line 172 - 'Who have' is used instead of 'Who gave'.

graduation_trivia.json

Line 9 - youtuber is used instead of the expected syntax 'YouTube'.
Line 49 - youtuber is used instead of the expected syntax 'YouTube'.
Line 57 - potential syntax issue (unless you are framing it as an organization in itself); suggest 'an Animal Rights Movement' instead of 'the Animal's Rights Movement', if intended to be generic.
Line 176 - potential typo issue (unless that's the actual company name intended), suggest Burger instead of Burguer.

trivia.json

Line 5 - youtuber is used instead of the expected syntax 'YouTube'.

=========================================================

Suggestions:

date_flirt.json

"Type": "action",
"Categories": ["failure", "taken", "wrong_gender", "uninterested"],
"Text": "[girl] shuffles uncomfortably, and quickly leaves."

date_suggestion.json

"Categories": ["date_generic", "greeting"],
"Text": "S-Sorry I'm late, have you been waiting long?"

date_wish.json

"I wouldn't want to impose, but since you asked..."

graduation_trivia.json

ID: xxxxxx,
Type: "good",
Text: "Became a popular voice actress for various anime series.",

ID: xxxxxx,
Type: "good",
Text: "Still keeps in touch with your idol group, offering sage advice.",

ID: xxxxxx,
Type: "bad",
Text: "Found deceased involving a traffic accident.",

ID: xxxxxx,
Type: "bad",
Text: "Arrested for the possession of illegal narcotics.",

Ursprünglich geschrieben von Trapezohedron:

snip

Aaah, I see I made some typos >.< I'll be uploading a new update with these fixed soon.

I've also added your suggestions! Thank you :D