Wrote a review on this, here it is:
https://terrenceswiff.wordpress.com/2018/07/27/tonari-no-seki-kun/
Tonari no Seki-kun always had a slow, inconsistent release when it was first being translated. It was almost inevitable, then, that it largely faded from Western memory. The series is officially translated, has ten volumes out, and they're all completely available for reading, but few have actually NOTICED this. This is a shame because Tonari no Seki-kun is essentially a masterpiece of its niche "doing weird stuff" genre. It's got many, MANY good points. Morishige-sensei keeps the series fresh and feeling new by employing dramatic, but spread out well developments in character and relationships, such that an appeal of the series becomes not just the titular Seki's antics, but protagonist Yokoi's intense shift from her position and tendencies from early in the series. Believe me, there's a lot to love and laugh at. If you've neglected the series for the last several years, do yourself a favor and give it another look to see in what ways Seki-kun has risen to excellence.