Solemn
Wolverine puts a stick between his legs and straight into some rice, all while wearing a solemn expression on his face. He's probably remembering his dad who died from getting his legs stuck in rice. Just leave the poor solemn creature alone.
しゅく, すく
つつし
None
When you first saw how solemn Wolverine was after his dad died, it really shook (しゅく) you. Now you're used to always seeing him emotionally cold and distant. It might be time to shake that solemnity out of him though.