Yesterday o Utatte afterword

[MangaDex]

 

[bastek66]

Aren't this two separate things
https://www.mangaupdates.com/series.html?id=49890
https://www.mangaupdates.com/series.html?id=164859

 

[shibakari-san]

Yes, they are. EX has a lot of artwork and a few early works from Toume. One of them is The Sea where Siren Lives which appears in both so I don't see the problem.