He may not bring your Kyoudai back from the dead, but Kiyondo Ishida will kick your butt right back into healthiness in no time if you're feeling down.
On a FODMAP diet? No problem. He's mostly gentle white tea to help soothe and calm you, and then he'll kick your sick ass into gear with citrus green tea and rose hips (low in FODMAPs for those on a fructose-restricted diet such as this blend's creator, and high in vitamin C to facilitate recovery!). What a sourpuss.
Coupled with lovely bright red hibiscus to make it seem like you're drinking the blood of your enemies. Such as the people who got your dearest brother executed.