The Bird Became My Elf Husband?! summary:

On her way back from work, Stella comes across a dying canary but instead of putting it out of its misery, she decides to take care of him. In that time, he grew fond of Stella however this was no ordinary canary but an elf of foreign origin and once he returned home, he discovered that the portal to Earth seals in just two months! The thing is, he has already spent way over a month on Earth!