ARCTERUS: Tokyo-based Arcterus has raised ¥130 million (approximately US $1.05 million) in a Series A round from Dentsu Digital Holdings, Startia and Bon Angels, reports Tech in Asia. Founded in 2010, the company offers a digital notebook app that allows students to upload and share class notes, along with an assessment tool for teachers and students. It also runs its own tutoring center. Founded in 2010, Arcterus was initially self-funded by its founder to the tune of ¥70 million (approx. US $567,000).