Possible themes could include revenge, redemption, or power dynamics. The mention of "Hakai suru" (destroy) suggests conflict. The main characters might include the Mob protagonist facing the main organization or antagonist. Since it's Chapter 13.1, the story might be escalating, possibly reaching a climax or introducing new antagonists.
Next, the user is looking for a complete guide. I should structure the guide into sections like Plot Summary, Key Characters, Themes, Predictions for Future Chapters, and Where to Read. Since Chapter 13.1 is specified, the summary should focus on that chapter's events. However, if the source isn't widely known, I might need to explain the overall story of the series briefly. Possible themes could include revenge, redemption, or power
I need to make sure the guide is helpful. If I can't find official summaries, I'll outline what's typical in such manga. Maybe mention common manga elements and apply them. Also, suggest places to read the manga, like the mentioned WeloveManga, other platforms if available, and note that availability might vary by region. Since it's Chapter 13