D-Prince!

D-Prince!, abbreviated as D-Pri (Dぷり), was an agency of male Virtual YouTubers created by IGU inc.

Concept
Translated from the official D-Prince website:

The time is now.... Kagurazaka Ichibankan is a western-style house that stands quietly in Kagurazaka, Tokyo. This is a "dormitory" where young men live together to pursue their own dreams. In fact, you can live in this dormitory for free. However, there was a condition for that. That is... "to distribute to the whole world to make women happy". The dormitory students are working hard today to heal and make the world's 3.5 billion women happy!

History
The project was announced on 25 September 2020. Their members debuted on 3 October.

On 1 November, 2020, Live2D models for the members were announced. The models were presented once a week starting on 7 December.

On 4 December, 2020, it was announced that D-Prince would be recruiting additional members. The recruitment period was run from 4 December, 2020 to 27 December, 2020.

Closure
On 3 December, 2021, it was announced that D-Prince! would be disbanding due to policy of the operating company. It was further stated that Kujou Taiga, Hanabusa Ibuki, and Louis Silvestre would be retiring on the end of December 2021, and Sayoshigure Kou would be graduating in January 2022, with all of the members' channels being closed by the end of January 2022.

Trivia

 * The "D" in D-Prince! stands for "Dream", "Digital", and "Dormitory".
 * The boss of D-Prince!, owner of Kagurazaka Ichibankan dorm, is referred to as Ooya-san (大家さん, lit. landlord), and manages the official Twitter account. Ooya-san sometimes comments on the members' streams and have banter with them on Twitter.
 * Ooya-san's unofficial emoji is 😈, as they sometimes use it in their messages.
 * They also have an unofficial fan art hashtag, #大家さんあーと.