Super String: Marco Polo’s Travel to the Multiverse

 (슈퍼스트링 -이세계 견문록-, Super String -異世界 見聞錄-, Syupeoseuteuring -isegye gyeonmullok-) is a fantasy Webtoon Original written by Inwan Youn and art by Boichi; it updates every Friday.

The Webtoon is a manga/manhwa (スーパーストリング 異世界見聞録, Super String: Isekai Kenbunroku, Sūpā Sutoringu -Isekai Kenbunroku-) pre-serialized in Weekly Shōnen Sunday, and then serialized in LINE Manga (IP block).

There are works that have a universe (Super String Universe) like this series.

Synopsis
''As the eldest son of the Polo family, Marco is striving to provide for his younger siblings. After a strange and unfortunate shipwreck, Marco finds himself in Asia, a place he was warned never to visit. Soon he realizes he is at the cusp of an unexpected journey where he will have to choose between protecting his family or saving the world.''