Ah, another beach chapter.
Naturally, Ryunosuke and her dad are in it too. I guess you can't separate them from the sea.
Ryunosuke's dad would really call random women his wife. I guess he wasn't joking when he said he managed to forget about her.
At this point, Ryunosuke wouldn't believe it even if her own mother came in front of her.
All this talk about mothers reminds me a lot about Nodoka from Ranma 1/2. I feel like Takahashi probably wanted to do more with Ryunosuke but since Urusei Yatsura was about Ataru and Lum and not the Fujinamis, she just repurposed the story for her new series instead. Shame tbh. Ryunosuke needed justice too.