This manga is trash.
It's like if an A.I. was asked to write a manga based on modern rom-com manga tropes. Only the A.I. was poorly programed and it decided to combine random tropes together with no reason or rhyme.
It's like the manga wants to be Eromanga Sensei, Yuru Camp, and Oregairu all at once, and it's not doing a good job at being any of those things.
And there's the most controversial part of this manga (as far as this site is concerned); Araki Kei. This character is a microcosm of everything wrong with the manga. She's an awkward combination of two clichés/tropes (the childhood friend and the misandrist lesbian), her character is mostly stock with no nuance, and her character arc is rushed to hell and back (She "falls in love" with the step-sister after barely getting to know her? She finds her cute and that's all she needs? Huh?).
Also to the people who call those who call out this forced, annoying character/writing as "yuri-shitters" most of you don't honestly like shoujo-ai. If you did, you would be just as upset that the lesbians in these kinds of manga are portrayed as psychotic, man-haters, a stereotype that lesbians "love". You would hate that the "yuri" usually never goes beyond skinship and one-sided crushes. You would hate the fact that the author baited you into reading a manga for the off chance of a shoujo-ai subplot (similar to how everyone got baited into reading a straight romance only to have yuri shoved down their throats ) only for said subplot to go nowhere while the FMC goes with the MMC and (more times often than not) the lesbian either falls in love the MMC or hooks up with a male side character. Face it, most of you only like these kinds of characters for the yuri fanservice, not the yuri romance.
Also you would never see a shoujo-ai/shonen-ai manga have a "token straight" character fawning over one of the leads and treating the other lead like crap without being viewed as a villain by the author and the readers, so why is it okay for gay character to do that in this kind of manga?