WHEN YACHIYO SMILES IT'S JUST THE CUTEST THING EVER

LOOK AT HER FACE, AAAAWWWWW! SHE NEVER SMILES IM GONNA EXPLODE

Also,

Iroha have her a grief seed and this was her reaction. She was like "Why didn't you use it on yourself?!"

She is just the most adorable thing next to Moemura (Homura with glasses)

So yeah now Iroha's dying (by turning into a witch) and Yachiyo won't let her die, at least not in front of her, and she's determined to keep her alive at any cost. It's so cute!