Hi Leo!
Not a Waka Ebisu...
Both Galle and Callahan list Waka Ebisu as a deep yellowish pink with pink dots in (prominent) blotch, (sometimes slightly green throat RZC) lobes rounded (two ranked, slightly wavy) flowers hose in hose 2-21/2“. reports of blooming are from early to late... leaves broader toward tip, not shiny. See the photo from the 2020 Satsuki Dictionary.
Btw: The white variation shown in this photo is Shiro Ebisu, its white jiai sport.
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There is also a Kurume Waka Ebisu - that is listed in Galle as a moderate red, very pale throat, dark blotch 1” flowers.
From your photos, it looks like you have something entirely different. I have a Waka Ebisu that wintered over In the ground. It hasn’t bloomed yet, but is pushing a lot of new growth. If there is a good blossom, I’ll post a photo here.
cheers
DSD sends