Nah i d say L communication... if u remember nana was always the popular one so mitsu being happy about receiving a confession too for once is normal for any middle or high schooler, considering he s nana s friend i wouldn t even be surprised if he was asked often to pass smth to nana... (if u remember the scene he was pointing at himself like are u fr u into me as in me lol)
And if u recall the scene he was about to say smth about it when he run back but nana just left
Even if he was popular its not semester fault and I'm pretty sure his reaction wasn't like ukes and even if it was his first confessing being happy and blushing in front of your crush its just wrong and that's why he misunderstood but my point was its not only semes fault because both didnt try to talk to each other
No way you guys blaming the seme when the uke was so happy and blushing from getting confessed to while he liked the seme lol uke is at fault and obviously the seme would misunderstand and yeah could be upfront but he was scared so he backed off and uke literally didnt do anything back then so L uke