This is the official serialization of Wakabayashi Toshiya's popular 4-koma collection.

It's a manga about kids going through a year of High School. Watch as they go through the high and lows of relationships and learn a few things about life, love, and sushi while they're at it.

Some segments of this manga is split between this and the original Pixiv collection. You can find the release order here under Tankobon Release Order: https://bato.to/forums/topic/23170-relationship-continuation-list-by-moredrowsy/

First Volume of chapters (1-17) are the same as found in the original pixiv collection:
https://bato.to/comic/_/comics/wakabayashi-toshiya%E2%80%99s-4-koma-collection-r9820