(Warning: I am comparatively lenient in giving scores)
(May contain few spoilers {they should be pretty harmless})

Senpai! Imakara Kokurimasu! is a manga meant for making the readers smile or even laugh through every single chapter!
I agree with everyone who, after reading the summary, feel that this would probably be a tiresome, super cliché, annoying or even repetitive ... but I still took the chance and I am absolutely glad I did!
Of course, thinking about how the female character is gonna keep confessing, immediately makes someone think that it will become boring after few chapters, but this manga succeeds in keeping the fun level high throughout. The way Senpai starts to fall in love with Koharu was in no way exaggerated or unrealistic because it was undeniable that Koharu had changed him in a positive way.
Characters:

Koharu- She is bright, positive and treasures her family and friends (this is very much evident because of how her friends help her out in her grand confession to Senpai and how beautiful her relationship with her mom is). She is very much aware of her own feelings and does not hesitate to voice it out. This does not mean that she is ignorant of the feelings of people around her, she not only does not ignore their feelings, she also wants to help them out. It's also admirable how her character kept on growing.

Shuu (Senpai) - He is not just another handsome character... he has his flaws and he is aware of that. He is not some tsundere, playboy or sadistic jerk and I can definitely assure you that you won't see him mistreat Koharu (except calling her names as a joke or when she annoyed him too much... he never says it harshly or in an offending or demeaning manner) in anyway. The way his character changed slowly after meeting Koharu was also sweet.

Other side characters are also amazing and none of them felt unnecessary. None of you should experience second-lead syndrome because that situation was handled admirably and didn't stretch out for a long time.

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