When will the collaboration between 'Fleur Days' and 'Dream Pavilion and the Sleepless Butterfly' take place?

It will be held from 14:00 on Monday, June 1, 2026 to 13:59 on Tuesday, June 30, 2026.

Which characters will appear during the collaboration period?

Three characters will appear as collaboration partners in sequence: 'Touko Katsura', 'Narukami Rai', and 'Jagasaki Yato'.

What are the benefits of the 'SP Collaboration'?

By obtaining collaboration SSR cards from the collaboration gacha, you can use the target characters as permanent partners and also acquire 'June Collaboration Medals' which can be exchanged for limited real goods.

What kind of game is 'Dream Pavilion and the Sleepless Butterfly'?

It is a romance simulation game for women, set in a dream brothel, provided by DMM GAMES and CyberAgent.

When can real goods be exchanged?

They can be exchanged from mid-June at the 'June Collaboration Medal Exchange Shop' which will open soon.

DMM GAMES 'Fleur Days' and 'Mugenro to Nemurenu Cho' to hold SP Collaboration Event

Published May 26, 2026 1:00 AM ・ Updated Jun 14, 2026 4:14 AM ・ 3 min read ・ Source: PR TIMES

Fleur Days, a life-support game on DMM GAMES, will hold an SP collaboration event with 'Mugenro to Nemurenu Cho' starting in June 2026, featuring permanent partner characters and physical goods exchange.

DMM GAMES, operated by EXNOA LLC, has announced the first in-game 'SP collaboration' for its life-support game 'Fleur Days' with the title 'Mugenro to Nemurenu Cho'.

SP Collaboration with 'Mugenro to Nemurenu Cho'

Collaboration Period: June 1, 2026 (Mon) 14:00 - June 30, 2026 (Tue) 13:59

During this event, characters 'Kuzuha Touko', 'Rai Narukami', and 'Yato Jagasaki' will appear sequentially as limited-time partners, allowing players to spend time with them using various daily tools. This time, as an 'SP Collaboration', we are delivering even more luxurious content!

< Collaboration Characters Become 'Permanent Partners'! > By obtaining a 'Collaboration SSR Card' from the 'Collaboration Gacha', the character will become a 'Permanent Partner', allowing players to select them as a partner at any time. Furthermore, the SSR cards feature new stories written by the scenario director of 'Mugenro'!

< Exchange for 'Real Goods' Exclusive to the Collaboration! > Players will receive 'June Collaboration Medals' as a bonus when using the collaboration gacha. These can be exchanged for 'Real Goods' exclusive to the Mugenro collaboration at the 'June Collaboration Medal Exchange', opening in mid-June.

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Source: PR TIMES
Category: Event

DMM GAMES 'Fleur Days' and 'Mugenro to Nemurenu Cho' to hold SP Collaboration Event

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SP Collaboration with 'Mugenro to Nemurenu Cho'

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