Onii-Chan

TLDR: Older Brother

A little more detail if you like-
Onii can end with 3 different Japanese honourifics, -San, -Chan, or -Sama.
-San is the basic ending for the basic big bro.
-Chan is a more compassionate ending for Onii if you really love your big brother and feel emotionally attached to him greatly
-Sama is a bit of a formal ending for big brother, nothing too special.

My Onii-San is a cool bro
I really love my Onii-Chan!
Yes he is my Onii-Sama

by Rywen March 10, 2015

Onii-Chan

Onii-Chan means "Big brother" in Japanese. Most people assume it's a mating call of some sort because of hentai but no that's just hentai. Lots of hentai has incest.

"Onii-chan! Drive me to my friend's house!"

by RigsSaysGoodbye May 4, 2018

Onii Chan

Means big brother in japanese and not used in any type of sexual or romantic way. It just means big brother in japanese.....chan here refers to the formal greeting that any kind of people use it to refer it to the elders where onii means big so in total it refers to big elder or big brother.

Onii chan is working in a big place nowadays.

by anonymous August 22, 2022

onii-chan

Brother in Japanese. Used mostly by little girls or children. PLEASE do not make this sexual its gross.

"Welcome home, onii-chan! Dinner is one the table!"

by Dekus_hair_23 October 4, 2021

Onii- Chan

To most normal people it means "brother" but...
if you're a nasty, it means "fuck buddy"

"Good morning Onii~ Chan"
Ara Ara~ Onii- Chan, you're so hard"

by definetlygoingtohell February 11, 2021

Onii chan

Your cute big brother

"Onii chan yamate kudasai!"

by ~Ewiot~ June 11, 2021

Onii-Chan

Means sister or brother.

Kotomi: Nuu Onii-Chan

by corakc November 11, 2009