Can you escape Pool House

The water's surface brims with summer's memories, while hints of autumn's fragrance ride the breeze. In a mansion encircled by trees turning to gold, a tapestry of puzzles unfolds. Can you gather the clues and escape from here?
 Please enjoy a leisurely time amidst the changing seasons. 

 [Renewal Information] Adjusted the difficulty of the puzzles for clearer gameplay. You can now save screenshots at your convenience to quickly review specific parts.

 [Difficulty] Beginner to intermediate level. With Hints 1 and 2, as well as the answers provided, even beginners can play casually and clear the game to the end!
 [Features] Hints Answers Screenshots Autosave
 [How to Play] Tap on areas of interest. You can obtain items and hints. Use them to obtain keys. Observation and quick thinking are key.