I was wondering why people glossed over Claune asking him to join her in the bath and not finding that incredibly cringey, and wondered why they made a big deal of the speech, but then reading comments on here its seems most except for one reader a page or two ago are oblivious to the ages.
Ain is 7 here, and Claune might be a little older i want to say in LN she was maybe a 8 or 9? But her asking a seven her old to get into the bath with her clearly in a non platonic manner is much worse than anything in the speech.
Then again I think you need to look at Japanese Manga/Anime character like people look at dogs, they have a different aging mechanism ala one human year is seven dog years. As your typical Japanese MC at least in isekai can walk and talk at an articulate level by 3, is a hero who saved the world by 15, reaches middle age at 20, and if they live to 30 even Methuselah would be asking for anti aging tips. Like half the writers would just be better not mentioning ages because its really jarring, but I guess some of it has to with the notion in Japan that a lot of people see high school life as the peak of life, and the real world is so soul crushing.