Still believe that sunrise will one day make these two canon. I don't think anyone actually believes Ayumu is a yandere. Its just a joke within the community.
So yeah, i don't know if Twins is the right tag given they're quintuplets. so i guess we ain't gonna create a tag for a specific case. Anyway i guess they console each other after the ending
Love how she decide to bought a love pillow of herself to pair with Calli's body pillow when she could have just hug the body pîllow. Don't know if it's genius or bird brain.