Tonari no Hachuurui-kun is a Manga/Manhwa/Manhua in (English/Raw) language, ANIMALS series, english chapters have been translated and you can read them here. You are reading chapters on ManhwaZ fastest updating comic site. The Summary is
Tatsumi lives a tired life because of his work at a sketchy company. His only reason for living and his passion is reptiles. Kotani lives next door to Tatsumi and unexpectedly one night after a misunderstanding ends up helping him create a channel to talk about reptiles.