Fire Emblem: Three Houses' got a big feature in the latest issue of Famitsu with the latest on the Cindered Shadows DLC.
冥界の使者 — Cindered Shadows was pretty decent
Can You Beat Fire Emblem: Three Houses (Cindered Shadows) without Attacking and with only Byleth?
One Year Retrospective: Was Fire Emblem Three Houses + DLC worth it?, by Zachary Sherry
Hapi, Fire Emblem Wiki
Chapter 2 - What Lies Beneath (Ambush in the Arena) - Fire Emblem: Three Houses Guide - IGN
Fire Emblem Three Houses: Cindered Shadows - Part 8 - Nighty Night [HARD MODE]
How Long Does It Take To Beat Fire Emblem: Three Houses (& 9 Other Things You Need To Know)
Fire Emblem: Three Houses Expansion Pass DLC Review
Fire Emblem Three Houses Ashen Wolves Has Us Root for Underdogs
Cindered Shadows save data is separate from the main game in Fire Emblem: Three Houses - My Nintendo News
Yuri, Fire Emblem Wiki
Fire Emblem: Three Houses Cindered Shadows DLC -- How Long To Beat The New Side Story - GameSpot
Famitsu: Cindered Shadows is 8-10 hours, tea time with Rhea coming, OST teased, more : r/fireemblem