Following are the Ten Golden Rules that almost every Haikyuu!! fanfiction obeys no matter what universe.
Basically they are totally canon and no one can convince us otherwise.
1. Dadchi and Momshi.
No matter where or when, Daichi and Sugamama are parents to us all.
2. Ultimate bromance that is Bokuto and Kuroo.
Otherwise know as Oya Oya Oya duo. Brokuto and Kuroo are partners in crime in every universe.
3. Oikawa is trash but he is OUR trash.
Team “Oikawa deserved better” His personality is hell but the only one who can tell him that is Iwa-chan and the fandom. Do not touch our garbage son.
4. Group chats. Group chats everywhere
Team chats, captain chats, colleague chats. Social media. Full of gossip. Who has the coolest nick wins.
Definitely Swageyama. Full of NSFW language and memes.
5. Ongoing quarrel about which setter is the
(Everyone knows it’s Akaashi.)
6. Daichi’s thighs.
Everyone saw them, everyone knows, Suga calls dibs.
7. Iwaizumi is so done with everything.
8. “You should have come to Shiratorizawa”.
Ushiwaka and his on point metaphors that no one would ever use in a daily speech. Also, he is partial to gardening.
9. Kageyama and Hinata are not aware that they are actually dating.
If you thought that Haikyuu!! would end with Karasuno winning The Nationals you were wrong. It will obviously end with their wedding.
10. Everyone is hot and gay.
Please refer to the friendly infographics below.