That ending was precious. Perfect landing, and while short, I think this was about perfect in terms of carrying to starting gimmick and not letting it go stale with repetition or dragging it out through melodrama story beats and whatnot.
Shiranui was a great character design, through and through - and Senpai managed to avoid the majority of the usual pitfalls that romcom male protagonists succumb to (also helped by the shorter run time, I'm sure).
Supporting cast were great, didn't get overly intrusive and helped the plot while offering some lighter comedic moments. Were good friends when it counted, and didn't take too much away from the main couple pair.
Honestly, one of the better romcom stories I've come across. Thank you for translating this series and bringing it to us.