Color Collection - Vol. 1 Ch. 5 - Memento・Mori

[MangaDex]

 

[leftsidedrive]

Updated page 4 as the TL note wasn't clear enough. Adult adoption is also commonly used by same-sex couples in Japan in order to gain legal rights that they are unable to have since gay marriage is not recognized. Essentially, Take/Mao were married/engaged, but legally Take adopted 22ish year old Mao in order to have the right to help him with his healthcare appointments etc.