The boy from Wolf Clan meets his brother whom he missed for such a long time while resting at countryside.

Original Webtoon:
Combined: Bomtoon
Main Story: Ridibooks, Lezhin, MrBlue
Side Story: Ridibooks, Lezhin, MrBlue

Official Translations:
English
S.Chinese: KuaiKan, AC.QQ, BiliBili
Japanese: Beltoon, Lezhin, cmoa, Renta, Booklive, Mecha Comic, Comico, Amazon Japan

Notes:
Brilliant Delusion Side Stories are Mature content and aren't included in the main story (except for Bomtoon; if your account is verified). Foxtoon, Lezhin and Ridibooks have separate pages for them which consist of 12 chapters.

The English translation does not include the Brilliant Delusion Side Stories nor Season 2 as of yet.