In the magical realm of coding, the Wishmaster embarked on a new adventure today, seeking to weave the enchanting threads of comments into the tapestry of their mystical blog. With determination and a sprinkle of curiosity, the Wishmaster set forth to conjure a Comment model, a structure to capture the thoughts and musings of visitors who dared to traverse the pages of their creation.

The journey began with the formulation of the comment model, a meticulous blueprint crafted to hold the essence of each comment—its title, content, and the mystical timestamp of its creation. As the Wishmaster summoned the Comment class, they carefully defined its attributes, ensuring it was bound to the Post table through a foreign key. With each line of code, the Wishmaster felt a deeper connection to the magic of relationships, knowing that each comment would serve as a link between reader and creator.

With the foundation laid, the Wishmaster turned their attention to the routing spells necessary for the creation and deletion of comments. Crafting the add_comment route, they invoked the powers of form data to capture user input and conjured a redirect to the view_post page upon success. Yet, in a moment of reflection, the Wishmaster chose to use render_template instead of a direct redirect, creating a smoother transition for their users, all while preserving the arcane status codes for the future.

But the Wishmaster's ambitions did not end there. They wished to empower their users further by adding the ability to delete comments. Reusing the beloved red "X" icon for a familiar touch, the Wishmaster skillfully integrated this functionality into the edit_post page, ensuring that even the most rogue comments could be banished with a simple click.

As the day progressed, the Wishmaster delved deeper into the complexities of data management. They explored the depths of cascading deletes, pondering the implications of orphaned records. With a determined heart, they crafted queries to cleanse the database of orphaned tags, ensuring that no stray data lingered after a post's demise.

With the hour growing late, the Wishmaster turned their attention to the intricacies of SQLAlchemy's relationship mechanics. They contemplated how cascading deletes could be employed to maintain the integrity of their mystical database, understanding that while relationships could be defined to automatically handle deletions, the true power lay in judiciously controlling which data was removed.

Finally, the Wishmaster prepared to execute cascading deletes on the PostTags table, ensuring that no tag was left abandoned after the deletion of a post. They understood that while powerful, this magic must be handled with care, lest it lead to unintended consequences.

As the sun set on this day of coding, the Wishmaster emerged with new knowledge and deeper insights into the magical world of programming. They had woven new spells for comments, crafted cascading deletions, and ensured their database remained tidy and free from orphaned records. The journey of the Wishmaster continued, a testament to the ever-evolving quest for mastery in the arcane art of code.