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No, it's not just u! Mangaka decided to transgender him at the end of the manga and he completely became a FLUFFY KOREAN girl from GIRLS GENERATION! :3
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The high difference really did get larger as the chapters went on. Compare:
http://www.mangago.zone/read-manga/ten_count/mf/v01/c001/32/
and
http://www.mangago.zone/read-manga/ten_count/mf/c018/21/
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made a typo. high should have been height
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eugh I wish this wouldn't have happened... I liked it better when Shirotani was just a bit shorter, but now he looks childish next to Kurose
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Kurose also looked much younger in the earlier chapters.
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Noooooo I cannot unsee it now. I never even noticed before...Darn, I kinda liked it before. Well, maybe kurose had growth spurt and now looks manlier too *mebeingdelusional
Well, not the first time I see a manga whos drawing change in the course of the story but...*sight
It's just me ?? I think Shirotani more smaller than before !!!