Sensei, Bokutachi ga Tsuitemasu!

Late-bloomer Gomi-sensei (Trash-sensei) has never even once dated a girl before. He's on lots of dating apps, trying desperately to somehow find a partner. But these precocious, modern elementary school students watch over their constantly anguished teacher…? They're supporting their unpopular teacher's dating life - it's a wholesome children's manga!

The first 7 chapters were occasionally serialized in Tonari no Young Jump (not as a series that appeared every episode; rather, sometimes an issue would include 3-4 chapters scattered in between other series). With the eighth chapter, it was moved to Grand Jump.