You do not have to seal the applications from arrowface, in principle. However, sealing and posting original document about Application forms for Proximity Services is required.
Please see the "Appendix1: arrowface Application Forms.pdf" for more details.

*In the list of Appendix1, signature is still required on application forms which are not covered by arrowface.

The documents are available on Target (JPX site).

[How to search]
1. Go to Target JPX site.
URL:https://www.arrowgate.jp/fw/dfw/tsebpp/webxportal/tsehome
*The URL starts with "http:" if accessing Target via arrownet.

2. Click [書類を検索する] tab at the top bar.

3. Select [通知書類] in <検索対象> box.

4. Input [書類ID] then click [検索する] at the bottom of the screen.
書類ID(Document ID):TTT0115000074234
[arrownet]Documents of Briefing Session on the New Method of System-related Applications