Taozi Xiongdi Bu Yao Nao(2021)

Taozi Xiongdi Bu Yao Nao

My new stepbrother is an obnoxious womanizer, and even worse, he's my big sister's ex-boyfriend! Internet-famous med-student older brother x thrifty homebody high-school younger brother are dramatically reunited, as they try to get used to living together as a new family!

(Source: Kuaikan, translated)