The first hook lasted fourteen minutes. Ava had designed it carefully. Theo had installed it badly. The difference mattered. Their revised observation-ledge equipment system had started as a safety project after the second fall. The old setup was simple. Students brought clipboards, bags and measuring tools onto the ledge. They placed them wherever seemed convenient. Then everyone moved around them. Ava hated this.

"A safety boundary means nothing if the safe zone becomes an obstacle course."

Professor Elowen agreed. So Ava, Theo and the boy who had fallen earlier in the year, whose name was Benji, designed a set of recessed bag hooks and marked equipment bays along the inner wall. No bags near railings. No loose measuring poles across walking routes. Nothing magical. Just hooks. Ava spent three weeks testing spacing. Theo attached the prototype with two screws and confidence. A first-year hung a heavy satchel on it. The hook fell off. Ava stared. Theo stared. The satchel sat on the ground between them. Benji laughed first. That helped. Theo picked up the hook.

"Structural disagreement."

Ava's expression could have damaged stone.

"You used the wrong anchors."

"I used anchors."

"For timber."

"The wall is stone."

"Exactly."

"Right."

"How did you build the window frame?"

"Different project."

"That does not answer the question."

Professor Elowen rescued him by arriving with proper masonry fittings. The second hook lasted. Then the third. By the end of the afternoon, twelve sat evenly along the wall. Painted boxes marked where field equipment should go. Benji tested the route by walking the ledge carrying a clipboard. He stopped where he had fallen months earlier. Jasper watched from farther back. Benji looked over the railing. Not for long. Then stepped away.

"Better," he said.

Ava studied him.

"The hooks?"

"Everything."

She nodded. No one made his fall into a lesson for everyone else while he stood there. No one asked whether the Sea should have saved him. That question had already caused enough damage. Benji hung his bag on the new hook.

"At least I got school furniture out of it."

Theo said, "Legacy." Ava sighed. Jasper smiled. "Legacy" sounded far too grand for a bag hook, which was probably why he liked it. The new system passed inspection. Crowe approved it for every first-year observation ledge. Ava read the approval note three times. Harper found her in Room Fourteen afterward.

"You look happy."

"I am."

"Because of hooks."

"Because something is safer."

Harper sat on her bed.

"You're going to become terrifying when you're older."

Ava considered.

"Good."

The project taught Jasper something too. Not every problem needed ancient knowledge. Some required twelve hooks and the correct masonry anchors. That evening he wrote to his mother. He told her about the new equipment bays. He told her about Soren's lift book. He told her Harper had won the handball final. He did not mention the Sea once. When the letter was finished, he reread it. For months, he had worried that leaving out the Sea meant hiding his life. Now he understood the opposite. His life contained enough other things to fill a page. He sealed the envelope. Outside, the tide moved against the cliff. He let it.