俺の生徒はかわいくない (Ore no Seito wa Kawaikunai)

Plot

That day, my precious laboratory and my ass were stolen by a devilish student-- New associate professor Mizutani Masafuyu, who has a certain weakness, has his lab taken over by the number one ranking student on campus, Ryogo Tenshi. The two began their research life together unwillingly, but Tenshi continues to play naughty tricks on him at every opportunity...?