Sekkai 

Sekkai is a term used for a mother who unfortunately gives birth to what is known as a "spastic" baby. A Sekkai also usually possesses ginger hair. People usually don't like Sekkai as her "disabled" son typically puts people off with t=his nuclear breath. Sekkai is also the Japanese word for "mother of evil".

boy 1: hey look its a sekkai
boy 2: run

boy 1: why?
boy 2: she is the mother of".....".

boy 1: h no not "...." he has horrible breath

Sekkai by jamaicandad2321 July 4, 2022

Sekai Ichi 

Japanese for "World's Greatest", or "Best in the World".

"BAKAMONO GA! DOITSU NO KAGAKU WA SEKAI ICHI!"
"You utter fool! German science is the best in the world!"

Sekai Ichi by Arky the Returd January 14, 2020

Project Sekai 

Project Sekai is a rhythm game developed by SEGA, Craft Egg, Colorful Palette and Crypton Future Media, released on September 30, 2020 in Japan.
The game features Crypton's Vocaloid characters Hatsune Miku, Megurine Luka, Kagamine Rin, Kagamine Len, MEIKO and KAITO; and 20 new characters which are split up into 5 groups: Leo/need, More More Jump!, Vivid Bad Squad, Wonderlands x Showtime, and 25ji, Nightcord de (25:00 at Nightcord).

Project Sekai is such a fun game! My favourite character is Mizuki Akiyama from the group 25ji, Nightcord de.

Project Sekai by cutieliz.1015 May 20, 2022

project sekai 

a rhythm game go play it or be a non epic gamer!!

person A : i luvvvv pproject sekai!!!
person B; me too..
person A; wanna make out
person B; yes
makes out.
PLAY PROJECT SEKAI NOW!

project sekai by emu otori May 14, 2022

Sekai 

Japanese for "world"

This sekai is filled with water, vegetation, and life.

Sekai by The SF Kid March 10, 2013

Sekai 

Ship name for EXO's Sehun and Kai. One of the most best ships that graced the earth. These two are engaged.

Sekai is engaged???

Yes Kai gave Sehun a pink heart-shaped ring.

Sekai by HunJonginnie July 9, 2018

Sekai-Ichi Hatsukoi

Sekai-Ichi is a manga and anime by the author Nakamura Shungiku, who is famous for writing the anime and manga Junjou Romantica. She is a yaoi or boys' love author. Some of her other creations are √W.P.B. (2003)
Castilla (2000)
Hybrid Child (2005)
Junjou Mistake (2008)
Junjou Romantica (2002)
Junjou Romantica Artbook (2008)
Junjou Romantica dj - Chika*Chika 3)
Mangetsu Monogatari (2009)
Picturesque of a Mask (2004)
Restaurant Games (2003)
Sekaiichi Hatsukoi (2008)
Touzandou Tentsui Ibun (1998)
Tsuki wa Yamiyo ni Kakuru ga Gotoku (1999)
Umi ni Nemuru Hana (2001)
In the Sekai-Ichi Hatsukoi manga and anime, Usagi Akihiko is mentioned, as he is a character in her series, junjou romantica.

The ukes in Sekai-Ichi Hatsukoi are so cute!

The whats, in what?
Oh, never mind. You won't get it because you don't like yaoi.

Sekai-Ichi Hatsukoi by Moki-Chan November 13, 2011