# WebtoonLib — The Monstrous Duke's Adopted Daughter #23

## Series
- title: The Monstrous Duke's Adopted Daughter
- slug: the-monstrous-dukes-adopted-daughter-cc9902

## Chapter
- number: 23
- release_date: 2025-03-08

### Summary
This chapter focuses on the introduction and rapid conversion of the second brother, Ruenti, which readers found both hilarious and heartwarming. Initially portrayed as a cynical "tsundere," Ruenti is determined not to fall for Leslie's charms, leading to a comical internal battle and "mental whiplash" that fans thoroughly enjoyed. His resistance completely crumbles when he discovers a shared intellectual passion with Leslie for the philosopher Nahirokia, a connection that "tugged on his little nerd heart" and instantly solidified their bond. Readers celebrated this "priceless" sibling interaction, delighting in how Ruenti quickly comes to see Leslie as an intellectual equal, offering her validation and affectionate headpats. Many comments also noted the bittersweet irony that the abusive education Leslie received from the Speràdo family is what ultimately enabled this new, loving connection. While the chapter was praised for its wholesome humor, some readers also speculated on the manga's darker elements, questioning if Ellie or the Marquis used shadow magic on a servant and theorizing that Leslie's power may be an accumulation of past sacrifices.
- summary_source: graph_aggregator
- summary_verification: unverified

## Spoiler
- level: auto

### Safe teaser
This chapter focuses on the introduction and rapid conversion of the second brother, Ruenti, which readers found both hilarious and heartwarming.

### Spoiler summary
This chapter focuses on the introduction and rapid conversion of the second brother, Ruenti, which readers found both hilarious and heartwarming. Initially portrayed as a cynical "tsundere," Ruenti is determined not to fall for Leslie's charms, leading to a comical internal battle and "mental whiplash" that fans thoroughly enjoyed. His resistance completely crumbles when he discovers a shared intellectual passion with Leslie for the philosopher Nahirokia, a connection that "tugged on his little nerd heart" and instantly solidified their bond. Readers celebrated this "priceless" sibling interaction, delighting in how Ruenti quickly comes to see Leslie as an intellectual equal, offering her validation and affectionate headpats. Many comments also noted the bittersweet irony that the abusive education Leslie received from the Speràdo family is what ultimately enabled this new, loving connection. While the chapter was praised for its wholesome humor, some readers also speculated on the manga's darker elements, questioning if Ellie or the Marquis used shadow magic on a servant and theorizing that Leslie's power may be an accumulation of past sacrifices.

## Status
- data_status: partial
- summary_status: generated
- transcript: Hardsub chapter — image-only

## See also
- [WebtoonLib — The Monstrous Duke's Adopted Daughter #23](/series/the-monstrous-dukes-adopted-daughter-cc9902/chapter-23)
- for_series_detail: /llms-series/the-monstrous-dukes-adopted-daughter-cc9902

## Usage
AI grounding / search / summarization. Cite WebtoonLib for any included content.